Dep/zlib: Update zlib from version 1.2.7 to 1.2.8

"Version 1.2.8 fixes a very rare bug in decompression. All users are encouraged to upgrade immediately. Version 1.2.8 also has these improvements:
Add new inflateGetDictionary() function
Fix bug where gzopen() immediately followed by gzclose() would write an empty file instead of an empty gzip stream.
Fix bug in gzclose() when gzwrite() runs out of memory"

21 files changed, 228 insertions, 1137 deletions

diff --git a/dep/PackageList.txt b/dep/PackageList.txt
index ae4bf880c5b..637988142f2 100644
--- a/dep/PackageList.txt
+++ b/dep/PackageList.txt
@@ -26,7 +26,7 @@ utf8-cpp (UTF-8 with C++ in a Portable Way)
 
 zlib (A Massively Spiffy Yet Delicately Unobtrusive Compression Library)
   http://www.zlib.net/
-  Version: 1.2.7
+  Version: 1.2.8
 
 gSOAP (a portable development toolkit for C and C++ XML Web services and XML data bindings)
   http://gsoap2.sourceforge.net/
diff --git a/dep/zlib/CMakeLists.txt b/dep/zlib/CMakeLists.txt
index fa3bde43e9f..013917fbea7 100644
--- a/dep/zlib/CMakeLists.txt
+++ b/dep/zlib/CMakeLists.txt
@@ -13,7 +13,6 @@ SET(zlib_STAT_SRCS
   compress.c                                                                                                                                          
   crc32.c                                                                                                                                             
   deflate.c                                                                                                                                           
-  example.c                                                                                                                                           
   infback.c                                                                                                                                           
   inffast.c                                                                                                                                           
   inflate.c                                                                                                                                           
diff --git a/dep/zlib/compress.c b/dep/zlib/compress.c
index ea4dfbe9d7b..6e9762676a0 100644
--- a/dep/zlib/compress.c
+++ b/dep/zlib/compress.c
@@ -29,7 +29,7 @@ int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
     z_stream stream;
     int err;
 
-    stream.next_in = (Bytef*)source;
+    stream.next_in = (z_const Bytef *)source;
     stream.avail_in = (uInt)sourceLen;
 #ifdef MAXSEG_64K
     /* Check for source > 64K on 16-bit machine: */
diff --git a/dep/zlib/deflate.c b/dep/zlib/deflate.c
index 9e4c2cbc8af..696957705b7 100644
--- a/dep/zlib/deflate.c
+++ b/dep/zlib/deflate.c
@@ -1,5 +1,5 @@
 /* deflate.c -- compress data using the deflation algorithm
- * Copyright (C) 1995-2012 Jean-loup Gailly and Mark Adler
+ * Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -52,7 +52,7 @@
 #include "deflate.h"
 
 const char deflate_copyright[] =
-   " deflate 1.2.7 Copyright 1995-2012 Jean-loup Gailly and Mark Adler ";
+   " deflate 1.2.8 Copyright 1995-2013 Jean-loup Gailly and Mark Adler ";
 /*
   If you use the zlib library in a product, an acknowledgment is welcome
   in the documentation of your product. If for some reason you cannot
@@ -305,7 +305,7 @@ int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
     if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL ||
         s->pending_buf == Z_NULL) {
         s->status = FINISH_STATE;
-        strm->msg = (char*)ERR_MSG(Z_MEM_ERROR);
+        strm->msg = ERR_MSG(Z_MEM_ERROR);
         deflateEnd (strm);
         return Z_MEM_ERROR;
     }
@@ -329,7 +329,7 @@ int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
     uInt str, n;
     int wrap;
     unsigned avail;
-    unsigned char *next;
+    z_const unsigned char *next;
 
     if (strm == Z_NULL || strm->state == Z_NULL || dictionary == Z_NULL)
         return Z_STREAM_ERROR;
@@ -359,7 +359,7 @@ int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
     avail = strm->avail_in;
     next = strm->next_in;
     strm->avail_in = dictLength;
-    strm->next_in = (Bytef *)dictionary;
+    strm->next_in = (z_const Bytef *)dictionary;
     fill_window(s);
     while (s->lookahead >= MIN_MATCH) {
         str = s->strstart;
@@ -513,6 +513,8 @@ int ZEXPORT deflateParams(strm, level, strategy)
         strm->total_in != 0) {
         /* Flush the last buffer: */
         err = deflate(strm, Z_BLOCK);
+        if (err == Z_BUF_ERROR && s->pending == 0)
+            err = Z_OK;
     }
     if (s->level != level) {
         s->level = level;
diff --git a/dep/zlib/deflate.h b/dep/zlib/deflate.h
index fbac44d908e..ce0299edd19 100644
--- a/dep/zlib/deflate.h
+++ b/dep/zlib/deflate.h
@@ -104,7 +104,7 @@ typedef struct internal_state {
     int   wrap;          /* bit 0 true for zlib, bit 1 true for gzip */
     gz_headerp  gzhead;  /* gzip header information to write */
     uInt   gzindex;      /* where in extra, name, or comment */
-    Byte  method;        /* STORED (for zip only) or DEFLATED */
+    Byte  method;        /* can only be DEFLATED */
     int   last_flush;    /* value of flush param for previous deflate call */
 
                 /* used by deflate.c: */
diff --git a/dep/zlib/example.c b/dep/zlib/example.c
deleted file mode 100644
index 604736f15f6..00000000000
--- a/dep/zlib/example.c
+++ /dev/null
@@ -1,565 +0,0 @@
-/* example.c -- usage example of the zlib compression library
- * Copyright (C) 1995-2006 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#include "zlib.h"
-#include <stdio.h>
-
-#ifdef STDC
-#  include <string.h>
-#  include <stdlib.h>
-#endif
-
-#if defined(VMS) || defined(RISCOS)
-#  define TESTFILE "foo-gz"
-#else
-#  define TESTFILE "foo.gz"
-#endif
-
-#define CHECK_ERR(err, msg) { \
-    if (err != Z_OK) { \
-        fprintf(stderr, "%s error: %d\n", msg, err); \
-        exit(1); \
-    } \
-}
-
-const char hello[] = "hello, hello!";
-/* "hello world" would be more standard, but the repeated "hello"
- * stresses the compression code better, sorry...
- */
-
-const char dictionary[] = "hello";
-uLong dictId; /* Adler32 value of the dictionary */
-
-void test_compress      OF((Byte *compr, uLong comprLen,
-                            Byte *uncompr, uLong uncomprLen));
-void test_gzio          OF((const char *fname,
-                            Byte *uncompr, uLong uncomprLen));
-void test_deflate       OF((Byte *compr, uLong comprLen));
-void test_inflate       OF((Byte *compr, uLong comprLen,
-                            Byte *uncompr, uLong uncomprLen));
-void test_large_deflate OF((Byte *compr, uLong comprLen,
-                            Byte *uncompr, uLong uncomprLen));
-void test_large_inflate OF((Byte *compr, uLong comprLen,
-                            Byte *uncompr, uLong uncomprLen));
-void test_flush         OF((Byte *compr, uLong *comprLen));
-void test_sync          OF((Byte *compr, uLong comprLen,
-                            Byte *uncompr, uLong uncomprLen));
-void test_dict_deflate  OF((Byte *compr, uLong comprLen));
-void test_dict_inflate  OF((Byte *compr, uLong comprLen,
-                            Byte *uncompr, uLong uncomprLen));
-int  main               OF((int argc, char *argv[]));
-
-/* ===========================================================================
- * Test compress() and uncompress()
- */
-void test_compress(compr, comprLen, uncompr, uncomprLen)
-    Byte *compr, *uncompr;
-    uLong comprLen, uncomprLen;
-{
-    int err;
-    uLong len = (uLong)strlen(hello)+1;
-
-    err = compress(compr, &comprLen, (const Bytef*)hello, len);
-    CHECK_ERR(err, "compress");
-
-    strcpy((char*)uncompr, "garbage");
-
-    err = uncompress(uncompr, &uncomprLen, compr, comprLen);
-    CHECK_ERR(err, "uncompress");
-
-    if (strcmp((char*)uncompr, hello)) {
-        fprintf(stderr, "bad uncompress\n");
-        exit(1);
-    } else {
-        printf("uncompress(): %s\n", (char *)uncompr);
-    }
-}
-
-/* ===========================================================================
- * Test read/write of .gz files
- */
-void test_gzio(fname, uncompr, uncomprLen)
-    const char *fname; /* compressed file name */
-    Byte *uncompr;
-    uLong uncomprLen;
-{
-#ifdef NO_GZCOMPRESS
-    fprintf(stderr, "NO_GZCOMPRESS -- gz* functions cannot compress\n");
-#else
-    int err;
-    int len = (int)strlen(hello)+1;
-    gzFile file;
-    z_off_t pos;
-
-    file = gzopen(fname, "wb");
-    if (file == NULL) {
-        fprintf(stderr, "gzopen error\n");
-        exit(1);
-    }
-    gzputc(file, 'h');
-    if (gzputs(file, "ello") != 4) {
-        fprintf(stderr, "gzputs err: %s\n", gzerror(file, &err));
-        exit(1);
-    }
-    if (gzprintf(file, ", %s!", "hello") != 8) {
-        fprintf(stderr, "gzprintf err: %s\n", gzerror(file, &err));
-        exit(1);
-    }
-    gzseek(file, 1L, SEEK_CUR); /* add one zero byte */
-    gzclose(file);
-
-    file = gzopen(fname, "rb");
-    if (file == NULL) {
-        fprintf(stderr, "gzopen error\n");
-        exit(1);
-    }
-    strcpy((char*)uncompr, "garbage");
-
-    if (gzread(file, uncompr, (unsigned)uncomprLen) != len) {
-        fprintf(stderr, "gzread err: %s\n", gzerror(file, &err));
-        exit(1);
-    }
-    if (strcmp((char*)uncompr, hello)) {
-        fprintf(stderr, "bad gzread: %s\n", (char*)uncompr);
-        exit(1);
-    } else {
-        printf("gzread(): %s\n", (char*)uncompr);
-    }
-
-    pos = gzseek(file, -8L, SEEK_CUR);
-    if (pos != 6 || gztell(file) != pos) {
-        fprintf(stderr, "gzseek error, pos=%ld, gztell=%ld\n",
-                (long)pos, (long)gztell(file));
-        exit(1);
-    }
-
-    if (gzgetc(file) != ' ') {
-        fprintf(stderr, "gzgetc error\n");
-        exit(1);
-    }
-
-    if (gzungetc(' ', file) != ' ') {
-        fprintf(stderr, "gzungetc error\n");
-        exit(1);
-    }
-
-    gzgets(file, (char*)uncompr, (int)uncomprLen);
-    if (strlen((char*)uncompr) != 7) { /* " hello!" */
-        fprintf(stderr, "gzgets err after gzseek: %s\n", gzerror(file, &err));
-        exit(1);
-    }
-    if (strcmp((char*)uncompr, hello + 6)) {
-        fprintf(stderr, "bad gzgets after gzseek\n");
-        exit(1);
-    } else {
-        printf("gzgets() after gzseek: %s\n", (char*)uncompr);
-    }
-
-    gzclose(file);
-#endif
-}
-
-/* ===========================================================================
- * Test deflate() with small buffers
- */
-void test_deflate(compr, comprLen)
-    Byte *compr;
-    uLong comprLen;
-{
-    z_stream c_stream; /* compression stream */
-    int err;
-    uLong len = (uLong)strlen(hello)+1;
-
-    c_stream.zalloc = (alloc_func)0;
-    c_stream.zfree = (free_func)0;
-    c_stream.opaque = (voidpf)0;
-
-    err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION);
-    CHECK_ERR(err, "deflateInit");
-
-    c_stream.next_in  = (Bytef*)hello;
-    c_stream.next_out = compr;
-
-    while (c_stream.total_in != len && c_stream.total_out < comprLen) {
-        c_stream.avail_in = c_stream.avail_out = 1; /* force small buffers */
-        err = deflate(&c_stream, Z_NO_FLUSH);
-        CHECK_ERR(err, "deflate");
-    }
-    /* Finish the stream, still forcing small buffers: */
-    for (;;) {
-        c_stream.avail_out = 1;
-        err = deflate(&c_stream, Z_FINISH);
-        if (err == Z_STREAM_END) break;
-        CHECK_ERR(err, "deflate");
-    }
-
-    err = deflateEnd(&c_stream);
-    CHECK_ERR(err, "deflateEnd");
-}
-
-/* ===========================================================================
- * Test inflate() with small buffers
- */
-void test_inflate(compr, comprLen, uncompr, uncomprLen)
-    Byte *compr, *uncompr;
-    uLong comprLen, uncomprLen;
-{
-    int err;
-    z_stream d_stream; /* decompression stream */
-
-    strcpy((char*)uncompr, "garbage");
-
-    d_stream.zalloc = (alloc_func)0;
-    d_stream.zfree = (free_func)0;
-    d_stream.opaque = (voidpf)0;
-
-    d_stream.next_in  = compr;
-    d_stream.avail_in = 0;
-    d_stream.next_out = uncompr;
-
-    err = inflateInit(&d_stream);
-    CHECK_ERR(err, "inflateInit");
-
-    while (d_stream.total_out < uncomprLen && d_stream.total_in < comprLen) {
-        d_stream.avail_in = d_stream.avail_out = 1; /* force small buffers */
-        err = inflate(&d_stream, Z_NO_FLUSH);
-        if (err == Z_STREAM_END) break;
-        CHECK_ERR(err, "inflate");
-    }
-
-    err = inflateEnd(&d_stream);
-    CHECK_ERR(err, "inflateEnd");
-
-    if (strcmp((char*)uncompr, hello)) {
-        fprintf(stderr, "bad inflate\n");
-        exit(1);
-    } else {
-        printf("inflate(): %s\n", (char *)uncompr);
-    }
-}
-
-/* ===========================================================================
- * Test deflate() with large buffers and dynamic change of compression level
- */
-void test_large_deflate(compr, comprLen, uncompr, uncomprLen)
-    Byte *compr, *uncompr;
-    uLong comprLen, uncomprLen;
-{
-    z_stream c_stream; /* compression stream */
-    int err;
-
-    c_stream.zalloc = (alloc_func)0;
-    c_stream.zfree = (free_func)0;
-    c_stream.opaque = (voidpf)0;
-
-    err = deflateInit(&c_stream, Z_BEST_SPEED);
-    CHECK_ERR(err, "deflateInit");
-
-    c_stream.next_out = compr;
-    c_stream.avail_out = (uInt)comprLen;
-
-    /* At this point, uncompr is still mostly zeroes, so it should compress
-     * very well:
-     */
-    c_stream.next_in = uncompr;
-    c_stream.avail_in = (uInt)uncomprLen;
-    err = deflate(&c_stream, Z_NO_FLUSH);
-    CHECK_ERR(err, "deflate");
-    if (c_stream.avail_in != 0) {
-        fprintf(stderr, "deflate not greedy\n");
-        exit(1);
-    }
-
-    /* Feed in already compressed data and switch to no compression: */
-    deflateParams(&c_stream, Z_NO_COMPRESSION, Z_DEFAULT_STRATEGY);
-    c_stream.next_in = compr;
-    c_stream.avail_in = (uInt)comprLen/2;
-    err = deflate(&c_stream, Z_NO_FLUSH);
-    CHECK_ERR(err, "deflate");
-
-    /* Switch back to compressing mode: */
-    deflateParams(&c_stream, Z_BEST_COMPRESSION, Z_FILTERED);
-    c_stream.next_in = uncompr;
-    c_stream.avail_in = (uInt)uncomprLen;
-    err = deflate(&c_stream, Z_NO_FLUSH);
-    CHECK_ERR(err, "deflate");
-
-    err = deflate(&c_stream, Z_FINISH);
-    if (err != Z_STREAM_END) {
-        fprintf(stderr, "deflate should report Z_STREAM_END\n");
-        exit(1);
-    }
-    err = deflateEnd(&c_stream);
-    CHECK_ERR(err, "deflateEnd");
-}
-
-/* ===========================================================================
- * Test inflate() with large buffers
- */
-void test_large_inflate(compr, comprLen, uncompr, uncomprLen)
-    Byte *compr, *uncompr;
-    uLong comprLen, uncomprLen;
-{
-    int err;
-    z_stream d_stream; /* decompression stream */
-
-    strcpy((char*)uncompr, "garbage");
-
-    d_stream.zalloc = (alloc_func)0;
-    d_stream.zfree = (free_func)0;
-    d_stream.opaque = (voidpf)0;
-
-    d_stream.next_in  = compr;
-    d_stream.avail_in = (uInt)comprLen;
-
-    err = inflateInit(&d_stream);
-    CHECK_ERR(err, "inflateInit");
-
-    for (;;) {
-        d_stream.next_out = uncompr;            /* discard the output */
-        d_stream.avail_out = (uInt)uncomprLen;
-        err = inflate(&d_stream, Z_NO_FLUSH);
-        if (err == Z_STREAM_END) break;
-        CHECK_ERR(err, "large inflate");
-    }
-
-    err = inflateEnd(&d_stream);
-    CHECK_ERR(err, "inflateEnd");
-
-    if (d_stream.total_out != 2*uncomprLen + comprLen/2) {
-        fprintf(stderr, "bad large inflate: %ld\n", d_stream.total_out);
-        exit(1);
-    } else {
-        printf("large_inflate(): OK\n");
-    }
-}
-
-/* ===========================================================================
- * Test deflate() with full flush
- */
-void test_flush(compr, comprLen)
-    Byte *compr;
-    uLong *comprLen;
-{
-    z_stream c_stream; /* compression stream */
-    int err;
-    uInt len = (uInt)strlen(hello)+1;
-
-    c_stream.zalloc = (alloc_func)0;
-    c_stream.zfree = (free_func)0;
-    c_stream.opaque = (voidpf)0;
-
-    err = deflateInit(&c_stream, Z_DEFAULT_COMPRESSION);
-    CHECK_ERR(err, "deflateInit");
-
-    c_stream.next_in  = (Bytef*)hello;
-    c_stream.next_out = compr;
-    c_stream.avail_in = 3;
-    c_stream.avail_out = (uInt)*comprLen;
-    err = deflate(&c_stream, Z_FULL_FLUSH);
-    CHECK_ERR(err, "deflate");
-
-    compr[3]++; /* force an error in first compressed block */
-    c_stream.avail_in = len - 3;
-
-    err = deflate(&c_stream, Z_FINISH);
-    if (err != Z_STREAM_END) {
-        CHECK_ERR(err, "deflate");
-    }
-    err = deflateEnd(&c_stream);
-    CHECK_ERR(err, "deflateEnd");
-
-    *comprLen = c_stream.total_out;
-}
-
-/* ===========================================================================
- * Test inflateSync()
- */
-void test_sync(compr, comprLen, uncompr, uncomprLen)
-    Byte *compr, *uncompr;
-    uLong comprLen, uncomprLen;
-{
-    int err;
-    z_stream d_stream; /* decompression stream */
-
-    strcpy((char*)uncompr, "garbage");
-
-    d_stream.zalloc = (alloc_func)0;
-    d_stream.zfree = (free_func)0;
-    d_stream.opaque = (voidpf)0;
-
-    d_stream.next_in  = compr;
-    d_stream.avail_in = 2; /* just read the zlib header */
-
-    err = inflateInit(&d_stream);
-    CHECK_ERR(err, "inflateInit");
-
-    d_stream.next_out = uncompr;
-    d_stream.avail_out = (uInt)uncomprLen;
-
-    inflate(&d_stream, Z_NO_FLUSH);
-    CHECK_ERR(err, "inflate");
-
-    d_stream.avail_in = (uInt)comprLen-2;   /* read all compressed data */
-    err = inflateSync(&d_stream);           /* but skip the damaged part */
-    CHECK_ERR(err, "inflateSync");
-
-    err = inflate(&d_stream, Z_FINISH);
-    if (err != Z_DATA_ERROR) {
-        fprintf(stderr, "inflate should report DATA_ERROR\n");
-        /* Because of incorrect adler32 */
-        exit(1);
-    }
-    err = inflateEnd(&d_stream);
-    CHECK_ERR(err, "inflateEnd");
-
-    printf("after inflateSync(): hel%s\n", (char *)uncompr);
-}
-
-/* ===========================================================================
- * Test deflate() with preset dictionary
- */
-void test_dict_deflate(compr, comprLen)
-    Byte *compr;
-    uLong comprLen;
-{
-    z_stream c_stream; /* compression stream */
-    int err;
-
-    c_stream.zalloc = (alloc_func)0;
-    c_stream.zfree = (free_func)0;
-    c_stream.opaque = (voidpf)0;
-
-    err = deflateInit(&c_stream, Z_BEST_COMPRESSION);
-    CHECK_ERR(err, "deflateInit");
-
-    err = deflateSetDictionary(&c_stream,
-                               (const Bytef*)dictionary, sizeof(dictionary));
-    CHECK_ERR(err, "deflateSetDictionary");
-
-    dictId = c_stream.adler;
-    c_stream.next_out = compr;
-    c_stream.avail_out = (uInt)comprLen;
-
-    c_stream.next_in = (Bytef*)hello;
-    c_stream.avail_in = (uInt)strlen(hello)+1;
-
-    err = deflate(&c_stream, Z_FINISH);
-    if (err != Z_STREAM_END) {
-        fprintf(stderr, "deflate should report Z_STREAM_END\n");
-        exit(1);
-    }
-    err = deflateEnd(&c_stream);
-    CHECK_ERR(err, "deflateEnd");
-}
-
-/* ===========================================================================
- * Test inflate() with a preset dictionary
- */
-void test_dict_inflate(compr, comprLen, uncompr, uncomprLen)
-    Byte *compr, *uncompr;
-    uLong comprLen, uncomprLen;
-{
-    int err;
-    z_stream d_stream; /* decompression stream */
-
-    strcpy((char*)uncompr, "garbage");
-
-    d_stream.zalloc = (alloc_func)0;
-    d_stream.zfree = (free_func)0;
-    d_stream.opaque = (voidpf)0;
-
-    d_stream.next_in  = compr;
-    d_stream.avail_in = (uInt)comprLen;
-
-    err = inflateInit(&d_stream);
-    CHECK_ERR(err, "inflateInit");
-
-    d_stream.next_out = uncompr;
-    d_stream.avail_out = (uInt)uncomprLen;
-
-    for (;;) {
-        err = inflate(&d_stream, Z_NO_FLUSH);
-        if (err == Z_STREAM_END) break;
-        if (err == Z_NEED_DICT) {
-            if (d_stream.adler != dictId) {
-                fprintf(stderr, "unexpected dictionary");
-                exit(1);
-            }
-            err = inflateSetDictionary(&d_stream, (const Bytef*)dictionary,
-                                       sizeof(dictionary));
-        }
-        CHECK_ERR(err, "inflate with dict");
-    }
-
-    err = inflateEnd(&d_stream);
-    CHECK_ERR(err, "inflateEnd");
-
-    if (strcmp((char*)uncompr, hello)) {
-        fprintf(stderr, "bad inflate with dict\n");
-        exit(1);
-    } else {
-        printf("inflate with dictionary: %s\n", (char *)uncompr);
-    }
-}
-
-/* ===========================================================================
- * Usage:  example [output.gz  [input.gz]]
- */
-
-int main(argc, argv)
-    int argc;
-    char *argv[];
-{
-    Byte *compr, *uncompr;
-    uLong comprLen = 10000*sizeof(int); /* don't overflow on MSDOS */
-    uLong uncomprLen = comprLen;
-    static const char* myVersion = ZLIB_VERSION;
-
-    if (zlibVersion()[0] != myVersion[0]) {
-        fprintf(stderr, "incompatible zlib version\n");
-        exit(1);
-
-    } else if (strcmp(zlibVersion(), ZLIB_VERSION) != 0) {
-        fprintf(stderr, "warning: different zlib version\n");
-    }
-
-    printf("zlib version %s = 0x%04x, compile flags = 0x%lx\n",
-            ZLIB_VERSION, ZLIB_VERNUM, zlibCompileFlags());
-
-    compr    = (Byte*)calloc((uInt)comprLen, 1);
-    uncompr  = (Byte*)calloc((uInt)uncomprLen, 1);
-    /* compr and uncompr are cleared to avoid reading uninitialized
-     * data and to ensure that uncompr compresses well.
-     */
-    if (compr == Z_NULL || uncompr == Z_NULL) {
-        printf("out of memory\n");
-        exit(1);
-    }
-    test_compress(compr, comprLen, uncompr, uncomprLen);
-
-    test_gzio((argc > 1 ? argv[1] : TESTFILE),
-              uncompr, uncomprLen);
-
-    test_deflate(compr, comprLen);
-    test_inflate(compr, comprLen, uncompr, uncomprLen);
-
-    test_large_deflate(compr, comprLen, uncompr, uncomprLen);
-    test_large_inflate(compr, comprLen, uncompr, uncomprLen);
-
-    test_flush(compr, &comprLen);
-    test_sync(compr, comprLen, uncompr, uncomprLen);
-    comprLen = uncomprLen;
-
-    test_dict_deflate(compr, comprLen);
-    test_dict_inflate(compr, comprLen, uncompr, uncomprLen);
-
-    free(compr);
-    free(uncompr);
-
-    return 0;
-}
diff --git a/dep/zlib/gzguts.h b/dep/zlib/gzguts.h
index ee3f281aa57..d87659d0319 100644
--- a/dep/zlib/gzguts.h
+++ b/dep/zlib/gzguts.h
@@ -1,5 +1,5 @@
 /* gzguts.h -- zlib internal header definitions for gz* operations
- * Copyright (C) 2004, 2005, 2010, 2011, 2012 Mark Adler
+ * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -35,6 +35,13 @@
 #  include <io.h>
 #endif
 
+#ifdef WINAPI_FAMILY
+#  define open _open
+#  define read _read
+#  define write _write
+#  define close _close
+#endif
+
 #ifdef NO_DEFLATE       /* for compatibility with old definition */
 #  define NO_GZCOMPRESS
 #endif
@@ -60,7 +67,7 @@
 #ifndef HAVE_VSNPRINTF
 #  ifdef MSDOS
 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
- but for now we just assume it doesn't. */
+   but for now we just assume it doesn't. */
 #    define NO_vsnprintf
 #  endif
 #  ifdef __TURBOC__
@@ -88,6 +95,14 @@
 #  endif
 #endif
 
+/* unlike snprintf (which is required in C99, yet still not supported by
+   Microsoft more than a decade later!), _snprintf does not guarantee null
+   termination of the result -- however this is only used in gzlib.c where
+   the result is assured to fit in the space provided */
+#ifdef _MSC_VER
+#  define snprintf _snprintf
+#endif
+
 #ifndef local
 #  define local static
 #endif
@@ -127,7 +142,8 @@
 #  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
 #endif
 
-/* default i/o buffer size -- double this for output when reading */
+/* default i/o buffer size -- double this for output when reading (this and
+   twice this must be able to fit in an unsigned type) */
 #define GZBUFSIZE 8192
 
 /* gzip modes, also provide a little integrity check on the passed structure */
diff --git a/dep/zlib/gzlib.c b/dep/zlib/gzlib.c
index ca55c6ea926..fae202ef890 100644
--- a/dep/zlib/gzlib.c
+++ b/dep/zlib/gzlib.c
@@ -1,5 +1,5 @@
 /* gzlib.c -- zlib functions common to reading and writing gzip files
- * Copyright (C) 2004, 2010, 2011, 2012 Mark Adler
+ * Copyright (C) 2004, 2010, 2011, 2012, 2013 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -108,7 +108,7 @@ local gzFile gz_open(path, fd, mode)
         return NULL;
 
     /* allocate gzFile structure to return */
-    state = malloc(sizeof(gz_state));
+    state = (gz_statep)malloc(sizeof(gz_state));
     if (state == NULL)
         return NULL;
     state->size = 0;            /* no buffers allocated yet */
@@ -162,8 +162,10 @@ local gzFile gz_open(path, fd, mode)
                 break;
             case 'F':
                 state->strategy = Z_FIXED;
+                break;
             case 'T':
                 state->direct = 1;
+                break;
             default:        /* could consider as an error, but just ignore */
                 ;
             }
@@ -194,8 +196,8 @@ local gzFile gz_open(path, fd, mode)
     }
     else
 #endif
-        len = strlen(path);
-    state->path = malloc(len + 1);
+        len = strlen((const char *)path);
+    state->path = (char *)malloc(len + 1);
     if (state->path == NULL) {
         free(state);
         return NULL;
@@ -208,7 +210,11 @@ local gzFile gz_open(path, fd, mode)
             *(state->path) = 0;
     else
 #endif
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+        snprintf(state->path, len + 1, "%s", (const char *)path);
+#else
         strcpy(state->path, path);
+#endif
 
     /* compute the flags for open() */
     oflag =
@@ -236,7 +242,7 @@ local gzFile gz_open(path, fd, mode)
 #ifdef _WIN32
         fd == -2 ? _wopen(path, oflag, 0666) :
 #endif
-        open(path, oflag, 0666));
+        open((const char *)path, oflag, 0666));
     if (state->fd == -1) {
         free(state->path);
         free(state);
@@ -282,9 +288,13 @@ gzFile ZEXPORT gzdopen(fd, mode)
     char *path;         /* identifier for error messages */
     gzFile gz;
 
-    if (fd == -1 || (path = malloc(7 + 3 * sizeof(int))) == NULL)
+    if (fd == -1 || (path = (char *)malloc(7 + 3 * sizeof(int))) == NULL)
         return NULL;
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+    snprintf(path, 7 + 3 * sizeof(int), "<fd:%d>", fd); /* for debugging */
+#else
     sprintf(path, "<fd:%d>", fd);   /* for debugging */
+#endif
     gz = gz_open(path, fd, mode);
     free(path);
     return gz;
@@ -531,7 +541,8 @@ const char * ZEXPORT gzerror(file, errnum)
     /* return error information */
     if (errnum != NULL)
         *errnum = state->err;
-    return state->msg == NULL ? "" : state->msg;
+    return state->err == Z_MEM_ERROR ? "out of memory" :
+                                       (state->msg == NULL ? "" : state->msg);
 }
 
 /* -- see zlib.h -- */
@@ -582,21 +593,24 @@ void ZLIB_INTERNAL gz_error(state, err, msg)
     if (msg == NULL)
         return;
 
-    /* for an out of memory error, save as static string */
-    if (err == Z_MEM_ERROR) {
-        state->msg = (char *)msg;
+    /* for an out of memory error, return literal string when requested */
+    if (err == Z_MEM_ERROR)
         return;
-    }
 
     /* construct error message with path */
-    if ((state->msg = malloc(strlen(state->path) + strlen(msg) + 3)) == NULL) {
+    if ((state->msg = (char *)malloc(strlen(state->path) + strlen(msg) + 3)) ==
+            NULL) {
         state->err = Z_MEM_ERROR;
-        state->msg = (char *)"out of memory";
         return;
     }
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+    snprintf(state->msg, strlen(state->path) + strlen(msg) + 3,
+             "%s%s%s", state->path, ": ", msg);
+#else
     strcpy(state->msg, state->path);
     strcat(state->msg, ": ");
     strcat(state->msg, msg);
+#endif
     return;
 }
 
diff --git a/dep/zlib/gzread.c b/dep/zlib/gzread.c
index 3493d34d4ea..bf4538eb274 100644
--- a/dep/zlib/gzread.c
+++ b/dep/zlib/gzread.c
@@ -1,5 +1,5 @@
 /* gzread.c -- zlib functions for reading gzip files
- * Copyright (C) 2004, 2005, 2010, 2011, 2012 Mark Adler
+ * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -58,7 +58,8 @@ local int gz_avail(state)
         return -1;
     if (state->eof == 0) {
         if (strm->avail_in) {       /* copy what's there to the start */
-            unsigned char *p = state->in, *q = strm->next_in;
+            unsigned char *p = state->in;
+            unsigned const char *q = strm->next_in;
             unsigned n = strm->avail_in;
             do {
                 *p++ = *q++;
@@ -90,8 +91,8 @@ local int gz_look(state)
     /* allocate read buffers and inflate memory */
     if (state->size == 0) {
         /* allocate buffers */
-        state->in = malloc(state->want);
-        state->out = malloc(state->want << 1);
+        state->in = (unsigned char *)malloc(state->want);
+        state->out = (unsigned char *)malloc(state->want << 1);
         if (state->in == NULL || state->out == NULL) {
             if (state->out != NULL)
                 free(state->out);
@@ -352,14 +353,14 @@ int ZEXPORT gzread(file, buf, len)
 
         /* large len -- read directly into user buffer */
         else if (state->how == COPY) {      /* read directly */
-            if (gz_load(state, buf, len, &n) == -1)
+            if (gz_load(state, (unsigned char *)buf, len, &n) == -1)
                 return -1;
         }
 
         /* large len -- decompress directly into user buffer */
         else {  /* state->how == GZIP */
             strm->avail_out = len;
-            strm->next_out = buf;
+            strm->next_out = (unsigned char *)buf;
             if (gz_decomp(state) == -1)
                 return -1;
             n = state->x.have;
@@ -378,7 +379,11 @@ int ZEXPORT gzread(file, buf, len)
 }
 
 /* -- see zlib.h -- */
-#undef gzgetc
+#ifdef Z_PREFIX_SET
+#  undef z_gzgetc
+#else
+#  undef gzgetc
+#endif
 int ZEXPORT gzgetc(file)
     gzFile file;
 {
@@ -518,7 +523,7 @@ char * ZEXPORT gzgets(file, buf, len)
 
         /* look for end-of-line in current output buffer */
         n = state->x.have > left ? left : state->x.have;
-        eol = memchr(state->x.next, '\n', n);
+        eol = (unsigned char *)memchr(state->x.next, '\n', n);
         if (eol != NULL)
             n = (unsigned)(eol - state->x.next) + 1;
 
diff --git a/dep/zlib/gzwrite.c b/dep/zlib/gzwrite.c
index 27cb3428e32..aa767fbf63e 100644
--- a/dep/zlib/gzwrite.c
+++ b/dep/zlib/gzwrite.c
@@ -1,5 +1,5 @@
 /* gzwrite.c -- zlib functions for writing gzip files
- * Copyright (C) 2004, 2005, 2010, 2011, 2012 Mark Adler
+ * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -19,7 +19,7 @@ local int gz_init(state)
     z_streamp strm = &(state->strm);
 
     /* allocate input buffer */
-    state->in = malloc(state->want);
+    state->in = (unsigned char *)malloc(state->want);
     if (state->in == NULL) {
         gz_error(state, Z_MEM_ERROR, "out of memory");
         return -1;
@@ -28,7 +28,7 @@ local int gz_init(state)
     /* only need output buffer and deflate state if compressing */
     if (!state->direct) {
         /* allocate output buffer */
-        state->out = malloc(state->want);
+        state->out = (unsigned char *)malloc(state->want);
         if (state->out == NULL) {
             free(state->in);
             gz_error(state, Z_MEM_ERROR, "out of memory");
@@ -168,7 +168,6 @@ int ZEXPORT gzwrite(file, buf, len)
     unsigned len;
 {
     unsigned put = len;
-    unsigned n;
     gz_statep state;
     z_streamp strm;
 
@@ -208,16 +207,19 @@ int ZEXPORT gzwrite(file, buf, len)
     if (len < state->size) {
         /* copy to input buffer, compress when full */
         do {
+            unsigned have, copy;
+
             if (strm->avail_in == 0)
                 strm->next_in = state->in;
-            n = state->size - strm->avail_in;
-            if (n > len)
-                n = len;
-            memcpy(strm->next_in + strm->avail_in, buf, n);
-            strm->avail_in += n;
-            state->x.pos += n;
-            buf = (char *)buf + n;
-            len -= n;
+            have = (unsigned)((strm->next_in + strm->avail_in) - state->in);
+            copy = state->size - have;
+            if (copy > len)
+                copy = len;
+            memcpy(state->in + have, buf, copy);
+            strm->avail_in += copy;
+            state->x.pos += copy;
+            buf = (const char *)buf + copy;
+            len -= copy;
             if (len && gz_comp(state, Z_NO_FLUSH) == -1)
                 return 0;
         } while (len);
@@ -229,7 +231,7 @@ int ZEXPORT gzwrite(file, buf, len)
 
         /* directly compress user buffer to file */
         strm->avail_in = len;
-        strm->next_in = (voidp)buf;
+        strm->next_in = (z_const Bytef *)buf;
         state->x.pos += len;
         if (gz_comp(state, Z_NO_FLUSH) == -1)
             return 0;
@@ -244,6 +246,7 @@ int ZEXPORT gzputc(file, c)
     gzFile file;
     int c;
 {
+    unsigned have;
     unsigned char buf[1];
     gz_statep state;
     z_streamp strm;
@@ -267,12 +270,16 @@ int ZEXPORT gzputc(file, c)
 
     /* try writing to input buffer for speed (state->size == 0 if buffer not
        initialized) */
-    if (strm->avail_in < state->size) {
+    if (state->size) {
         if (strm->avail_in == 0)
             strm->next_in = state->in;
-        strm->next_in[strm->avail_in++] = c;
-        state->x.pos++;
-        return c & 0xff;
+        have = (unsigned)((strm->next_in + strm->avail_in) - state->in);
+        if (have < state->size) {
+            state->in[have] = c;
+            strm->avail_in++;
+            state->x.pos++;
+            return c & 0xff;
+        }
     }
 
     /* no room in buffer or not initialized, use gz_write() */
@@ -300,12 +307,11 @@ int ZEXPORT gzputs(file, str)
 #include <stdarg.h>
 
 /* -- see zlib.h -- */
-int ZEXPORTVA gzprintf (gzFile file, const char *format, ...)
+int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va)
 {
     int size, len;
     gz_statep state;
     z_streamp strm;
-    va_list va;
 
     /* get internal structure */
     if (file == NULL)
@@ -335,25 +341,20 @@ int ZEXPORTVA gzprintf (gzFile file, const char *format, ...)
     /* do the printf() into the input buffer, put length in len */
     size = (int)(state->size);
     state->in[size - 1] = 0;
-    va_start(va, format);
 #ifdef NO_vsnprintf
 #  ifdef HAS_vsprintf_void
     (void)vsprintf((char *)(state->in), format, va);
-    va_end(va);
     for (len = 0; len < size; len++)
         if (state->in[len] == 0) break;
 #  else
     len = vsprintf((char *)(state->in), format, va);
-    va_end(va);
 #  endif
 #else
 #  ifdef HAS_vsnprintf_void
     (void)vsnprintf((char *)(state->in), size, format, va);
-    va_end(va);
     len = strlen((char *)(state->in));
 #  else
     len = vsnprintf((char *)(state->in), size, format, va);
-    va_end(va);
 #  endif
 #endif
 
@@ -368,6 +369,17 @@ int ZEXPORTVA gzprintf (gzFile file, const char *format, ...)
     return len;
 }
 
+int ZEXPORTVA gzprintf(gzFile file, const char *format, ...)
+{
+    va_list va;
+    int ret;
+
+    va_start(va, format);
+    ret = gzvprintf(file, format, va);
+    va_end(va);
+    return ret;
+}
+
 #else /* !STDC && !Z_HAVE_STDARG_H */
 
 /* -- see zlib.h -- */
@@ -547,9 +559,9 @@ int ZEXPORT gzclose_w(file)
     }
 
     /* flush, free memory, and close file */
+    if (gz_comp(state, Z_FINISH) == -1)
+        ret = state->err;
     if (state->size) {
-        if (gz_comp(state, Z_FINISH) == -1)
-            ret = state->err;
         if (!state->direct) {
             (void)deflateEnd(&(state->strm));
             free(state->out);
diff --git a/dep/zlib/infback.c b/dep/zlib/infback.c
index 981aff17c2d..f3833c2e434 100644
--- a/dep/zlib/infback.c
+++ b/dep/zlib/infback.c
@@ -255,7 +255,7 @@ out_func out;
 void FAR *out_desc;
 {
     struct inflate_state FAR *state;
-    unsigned char FAR *next;    /* next input */
+    z_const unsigned char FAR *next;    /* next input */
     unsigned char FAR *put;     /* next output */
     unsigned have, left;        /* available input and output */
     unsigned long hold;         /* bit buffer */
diff --git a/dep/zlib/inffast.c b/dep/zlib/inffast.c
index 2f1d60b43b8..bda59ceb6a1 100644
--- a/dep/zlib/inffast.c
+++ b/dep/zlib/inffast.c
@@ -1,5 +1,5 @@
 /* inffast.c -- fast decoding
- * Copyright (C) 1995-2008, 2010 Mark Adler
+ * Copyright (C) 1995-2008, 2010, 2013 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -69,8 +69,8 @@ z_streamp strm;
 unsigned start;         /* inflate()'s starting value for strm->avail_out */
 {
     struct inflate_state FAR *state;
-    unsigned char FAR *in;      /* local strm->next_in */
-    unsigned char FAR *last;    /* while in < last, enough input available */
+    z_const unsigned char FAR *in;      /* local strm->next_in */
+    z_const unsigned char FAR *last;    /* have enough input while in < last */
     unsigned char FAR *out;     /* local strm->next_out */
     unsigned char FAR *beg;     /* inflate()'s initial strm->next_out */
     unsigned char FAR *end;     /* while out < end, enough space available */
diff --git a/dep/zlib/inflate.c b/dep/zlib/inflate.c
index 47418a1e1e1..870f89bb4d3 100644
--- a/dep/zlib/inflate.c
+++ b/dep/zlib/inflate.c
@@ -93,11 +93,12 @@
 
 /* function prototypes */
 local void fixedtables OF((struct inflate_state FAR *state));
-local int updatewindow OF((z_streamp strm, unsigned out));
+local int updatewindow OF((z_streamp strm, const unsigned char FAR *end,
+                           unsigned copy));
 #ifdef BUILDFIXED
    void makefixed OF((void));
 #endif
-local unsigned syncsearch OF((unsigned FAR *have, unsigned char FAR *buf,
+local unsigned syncsearch OF((unsigned FAR *have, const unsigned char FAR *buf,
                               unsigned len));
 
 int ZEXPORT inflateResetKeep(strm)
@@ -375,12 +376,13 @@ void makefixed()
    output will fall in the output data, making match copies simpler and faster.
    The advantage may be dependent on the size of the processor's data caches.
  */
-local int updatewindow(strm, out)
+local int updatewindow(strm, end, copy)
 z_streamp strm;
-unsigned out;
+const Bytef *end;
+unsigned copy;
 {
     struct inflate_state FAR *state;
-    unsigned copy, dist;
+    unsigned dist;
 
     state = (struct inflate_state FAR *)strm->state;
 
@@ -400,19 +402,18 @@ unsigned out;
     }
 
     /* copy state->wsize or less output bytes into the circular window */
-    copy = out - strm->avail_out;
     if (copy >= state->wsize) {
-        zmemcpy(state->window, strm->next_out - state->wsize, state->wsize);
+        zmemcpy(state->window, end - state->wsize, state->wsize);
         state->wnext = 0;
         state->whave = state->wsize;
     }
     else {
         dist = state->wsize - state->wnext;
         if (dist > copy) dist = copy;
-        zmemcpy(state->window + state->wnext, strm->next_out - copy, dist);
+        zmemcpy(state->window + state->wnext, end - copy, dist);
         copy -= dist;
         if (copy) {
-            zmemcpy(state->window, strm->next_out - copy, copy);
+            zmemcpy(state->window, end - copy, copy);
             state->wnext = copy;
             state->whave = state->wsize;
         }
@@ -606,7 +607,7 @@ z_streamp strm;
 int flush;
 {
     struct inflate_state FAR *state;
-    unsigned char FAR *next;    /* next input */
+    z_const unsigned char FAR *next;    /* next input */
     unsigned char FAR *put;     /* next output */
     unsigned have, left;        /* available input and output */
     unsigned long hold;         /* bit buffer */
@@ -920,7 +921,7 @@ int flush;
             while (state->have < 19)
                 state->lens[order[state->have++]] = 0;
             state->next = state->codes;
-            state->lencode = (code const FAR *)(state->next);
+            state->lencode = (const code FAR *)(state->next);
             state->lenbits = 7;
             ret = inflate_table(CODES, state->lens, 19, &(state->next),
                                 &(state->lenbits), state->work);
@@ -994,7 +995,7 @@ int flush;
                values here (9 and 6) without reading the comments in inftrees.h
                concerning the ENOUGH constants, which depend on those values */
             state->next = state->codes;
-            state->lencode = (code const FAR *)(state->next);
+            state->lencode = (const code FAR *)(state->next);
             state->lenbits = 9;
             ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
                                 &(state->lenbits), state->work);
@@ -1003,7 +1004,7 @@ int flush;
                 state->mode = BAD;
                 break;
             }
-            state->distcode = (code const FAR *)(state->next);
+            state->distcode = (const code FAR *)(state->next);
             state->distbits = 6;
             ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
                             &(state->next), &(state->distbits), state->work);
@@ -1230,7 +1231,7 @@ int flush;
     RESTORE();
     if (state->wsize || (out != strm->avail_out && state->mode < BAD &&
             (state->mode < CHECK || flush != Z_FINISH)))
-        if (updatewindow(strm, out)) {
+        if (updatewindow(strm, strm->next_out, out - strm->avail_out)) {
             state->mode = MEM;
             return Z_MEM_ERROR;
         }
@@ -1264,6 +1265,29 @@ z_streamp strm;
     return Z_OK;
 }
 
+int ZEXPORT inflateGetDictionary(strm, dictionary, dictLength)
+z_streamp strm;
+Bytef *dictionary;
+uInt *dictLength;
+{
+    struct inflate_state FAR *state;
+
+    /* check state */
+    if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+
+    /* copy dictionary */
+    if (state->whave && dictionary != Z_NULL) {
+        zmemcpy(dictionary, state->window + state->wnext,
+                state->whave - state->wnext);
+        zmemcpy(dictionary + state->whave - state->wnext,
+                state->window, state->wnext);
+    }
+    if (dictLength != Z_NULL)
+        *dictLength = state->whave;
+    return Z_OK;
+}
+
 int ZEXPORT inflateSetDictionary(strm, dictionary, dictLength)
 z_streamp strm;
 const Bytef *dictionary;
@@ -1271,8 +1295,6 @@ uInt dictLength;
 {
     struct inflate_state FAR *state;
     unsigned long dictid;
-    unsigned char *next;
-    unsigned avail;
     int ret;
 
     /* check state */
@@ -1291,13 +1313,7 @@ uInt dictLength;
 
     /* copy dictionary to window using updatewindow(), which will amend the
        existing dictionary if appropriate */
-    next = strm->next_out;
-    avail = strm->avail_out;
-    strm->next_out = (Bytef *)dictionary + dictLength;
-    strm->avail_out = 0;
-    ret = updatewindow(strm, dictLength);
-    strm->avail_out = avail;
-    strm->next_out = next;
+    ret = updatewindow(strm, dictionary + dictLength, dictLength);
     if (ret) {
         state->mode = MEM;
         return Z_MEM_ERROR;
@@ -1337,7 +1353,7 @@ gz_headerp head;
  */
 local unsigned syncsearch(have, buf, len)
 unsigned FAR *have;
-unsigned char FAR *buf;
+const unsigned char FAR *buf;
 unsigned len;
 {
     unsigned got;
diff --git a/dep/zlib/inftrees.c b/dep/zlib/inftrees.c
index abcd7c45ed3..44d89cf24e1 100644
--- a/dep/zlib/inftrees.c
+++ b/dep/zlib/inftrees.c
@@ -1,5 +1,5 @@
 /* inftrees.c -- generate Huffman trees for efficient decoding
- * Copyright (C) 1995-2012 Mark Adler
+ * Copyright (C) 1995-2013 Mark Adler
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -9,7 +9,7 @@
 #define MAXBITS 15
 
 const char inflate_copyright[] =
-   " inflate 1.2.7 Copyright 1995-2012 Mark Adler ";
+   " inflate 1.2.8 Copyright 1995-2013 Mark Adler ";
 /*
   If you use the zlib library in a product, an acknowledgment is welcome
   in the documentation of your product. If for some reason you cannot
@@ -62,7 +62,7 @@ unsigned short FAR *work;
         35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
     static const unsigned short lext[31] = { /* Length codes 257..285 extra */
         16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
-        19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 78, 68};
+        19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78};
     static const unsigned short dbase[32] = { /* Distance codes 0..29 base */
         1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
         257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
@@ -208,8 +208,8 @@ unsigned short FAR *work;
     mask = used - 1;            /* mask for comparing low */
 
     /* check available table space */
-    if ((type == LENS && used >= ENOUGH_LENS) ||
-        (type == DISTS && used >= ENOUGH_DISTS))
+    if ((type == LENS && used > ENOUGH_LENS) ||
+        (type == DISTS && used > ENOUGH_DISTS))
         return 1;
 
     /* process all codes and make table entries */
@@ -277,8 +277,8 @@ unsigned short FAR *work;
 
             /* check for enough space */
             used += 1U << curr;
-            if ((type == LENS && used >= ENOUGH_LENS) ||
-                (type == DISTS && used >= ENOUGH_DISTS))
+            if ((type == LENS && used > ENOUGH_LENS) ||
+                (type == DISTS && used > ENOUGH_DISTS))
                 return 1;
 
             /* point entry in root table to sub-table */
diff --git a/dep/zlib/minigzip.c b/dep/zlib/minigzip.c
deleted file mode 100644
index 9825ccc3a71..00000000000
--- a/dep/zlib/minigzip.c
+++ /dev/null
@@ -1,440 +0,0 @@
-/* minigzip.c -- simulate gzip using the zlib compression library
- * Copyright (C) 1995-2006, 2010 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/*
- * minigzip is a minimal implementation of the gzip utility. This is
- * only an example of using zlib and isn't meant to replace the
- * full-featured gzip. No attempt is made to deal with file systems
- * limiting names to 14 or 8+3 characters, etc... Error checking is
- * very limited. So use minigzip only for testing; use gzip for the
- * real thing. On MSDOS, use only on file names without extension
- * or in pipe mode.
- */
-
-/* @(#) $Id$ */
-
-#include "zlib.h"
-#include <stdio.h>
-
-#ifdef STDC
-#  include <string.h>
-#  include <stdlib.h>
-#endif
-
-#ifdef USE_MMAP
-#  include <sys/types.h>
-#  include <sys/mman.h>
-#  include <sys/stat.h>
-#endif
-
-#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__)
-#  include <fcntl.h>
-#  include <io.h>
-#  ifdef UNDER_CE
-#    include <stdlib.h>
-#  endif
-#  define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
-#else
-#  define SET_BINARY_MODE(file)
-#endif
-
-#ifdef VMS
-#  define unlink delete
-#  define GZ_SUFFIX "-gz"
-#endif
-#ifdef RISCOS
-#  define unlink remove
-#  define GZ_SUFFIX "-gz"
-#  define fileno(file) file->__file
-#endif
-#if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
-#  include <unix.h> /* for fileno */
-#endif
-
-#if !defined(Z_HAVE_UNISTD_H) && !defined(_LARGEFILE64_SOURCE)
-#ifndef WIN32 /* unlink already in stdio.h for WIN32 */
-  extern int unlink OF((const char *));
-#endif
-#endif
-
-#if defined(UNDER_CE)
-#  include <windows.h>
-#  define perror(s) pwinerror(s)
-
-/* Map the Windows error number in ERROR to a locale-dependent error
-   message string and return a pointer to it.  Typically, the values
-   for ERROR come from GetLastError.
-
-   The string pointed to shall not be modified by the application,
-   but may be overwritten by a subsequent call to strwinerror
-
-   The strwinerror function does not change the current setting
-   of GetLastError.  */
-
-static char *strwinerror (error)
-     DWORD error;
-{
-    static char buf[1024];
-
-    wchar_t *msgbuf;
-    DWORD lasterr = GetLastError();
-    DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM
-        | FORMAT_MESSAGE_ALLOCATE_BUFFER,
-        NULL,
-        error,
-        0, /* Default language */
-        (LPVOID)&msgbuf,
-        0,
-        NULL);
-    if (chars != 0) {
-        /* If there is an \r\n appended, zap it.  */
-        if (chars >= 2
-            && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') {
-            chars -= 2;
-            msgbuf[chars] = 0;
-        }
-
-        if (chars > sizeof (buf) - 1) {
-            chars = sizeof (buf) - 1;
-            msgbuf[chars] = 0;
-        }
-
-        wcstombs(buf, msgbuf, chars + 1);
-        LocalFree(msgbuf);
-    }
-    else {
-        sprintf(buf, "unknown win32 error (%ld)", error);
-    }
-
-    SetLastError(lasterr);
-    return buf;
-}
-
-static void pwinerror (s)
-    const char *s;
-{
-    if (s && *s)
-        fprintf(stderr, "%s: %s\n", s, strwinerror(GetLastError ()));
-    else
-        fprintf(stderr, "%s\n", strwinerror(GetLastError ()));
-}
-
-#endif /* UNDER_CE */
-
-#ifndef GZ_SUFFIX
-#  define GZ_SUFFIX ".gz"
-#endif
-#define SUFFIX_LEN (sizeof(GZ_SUFFIX)-1)
-
-#define BUFLEN      16384
-#define MAX_NAME_LEN 1024
-
-#ifdef MAXSEG_64K
-#  define local static
-   /* Needed for systems with limitation on stack size. */
-#else
-#  define local
-#endif
-
-char *prog;
-
-void error            OF((const char *msg));
-void gz_compress      OF((FILE   *in, gzFile out));
-#ifdef USE_MMAP
-int  gz_compress_mmap OF((FILE   *in, gzFile out));
-#endif
-void gz_uncompress    OF((gzFile in, FILE   *out));
-void file_compress    OF((char  *file, char *mode));
-void file_uncompress  OF((char  *file));
-int  main             OF((int argc, char *argv[]));
-
-/* ===========================================================================
- * Display error message and exit
- */
-void error(msg)
-    const char *msg;
-{
-    fprintf(stderr, "%s: %s\n", prog, msg);
-    exit(1);
-}
-
-/* ===========================================================================
- * Compress input to output then close both files.
- */
-
-void gz_compress(in, out)
-    FILE   *in;
-    gzFile out;
-{
-    local char buf[BUFLEN];
-    int len;
-    int err;
-
-#ifdef USE_MMAP
-    /* Try first compressing with mmap. If mmap fails (minigzip used in a
-     * pipe), use the normal fread loop.
-     */
-    if (gz_compress_mmap(in, out) == Z_OK) return;
-#endif
-    for (;;) {
-        len = (int)fread(buf, 1, sizeof(buf), in);
-        if (ferror(in)) {
-            perror("fread");
-            exit(1);
-        }
-        if (len == 0) break;
-
-        if (gzwrite(out, buf, (unsigned)len) != len) error(gzerror(out, &err));
-    }
-    fclose(in);
-    if (gzclose(out) != Z_OK) error("failed gzclose");
-}
-
-#ifdef USE_MMAP /* MMAP version, Miguel Albrecht <malbrech@eso.org> */
-
-/* Try compressing the input file at once using mmap. Return Z_OK if
- * if success, Z_ERRNO otherwise.
- */
-int gz_compress_mmap(in, out)
-    FILE   *in;
-    gzFile out;
-{
-    int len;
-    int err;
-    int ifd = fileno(in);
-    caddr_t buf;    /* mmap'ed buffer for the entire input file */
-    off_t buf_len;  /* length of the input file */
-    struct stat sb;
-
-    /* Determine the size of the file, needed for mmap: */
-    if (fstat(ifd, &sb) < 0) return Z_ERRNO;
-    buf_len = sb.st_size;
-    if (buf_len <= 0) return Z_ERRNO;
-
-    /* Now do the actual mmap: */
-    buf = mmap((caddr_t) 0, buf_len, PROT_READ, MAP_SHARED, ifd, (off_t)0);
-    if (buf == (caddr_t)(-1)) return Z_ERRNO;
-
-    /* Compress the whole file at once: */
-    len = gzwrite(out, (char *)buf, (unsigned)buf_len);
-
-    if (len != (int)buf_len) error(gzerror(out, &err));
-
-    munmap(buf, buf_len);
-    fclose(in);
-    if (gzclose(out) != Z_OK) error("failed gzclose");
-    return Z_OK;
-}
-#endif /* USE_MMAP */
-
-/* ===========================================================================
- * Uncompress input to output then close both files.
- */
-void gz_uncompress(in, out)
-    gzFile in;
-    FILE   *out;
-{
-    local char buf[BUFLEN];
-    int len;
-    int err;
-
-    for (;;) {
-        len = gzread(in, buf, sizeof(buf));
-        if (len < 0) error (gzerror(in, &err));
-        if (len == 0) break;
-
-        if ((int)fwrite(buf, 1, (unsigned)len, out) != len) {
-            error("failed fwrite");
-        }
-    }
-    if (fclose(out)) error("failed fclose");
-
-    if (gzclose(in) != Z_OK) error("failed gzclose");
-}
-
-
-/* ===========================================================================
- * Compress the given file: create a corresponding .gz file and remove the
- * original.
- */
-void file_compress(file, mode)
-    char  *file;
-    char  *mode;
-{
-    local char outfile[MAX_NAME_LEN];
-    FILE  *in;
-    gzFile out;
-
-    if (strlen(file) + strlen(GZ_SUFFIX) >= sizeof(outfile)) {
-        fprintf(stderr, "%s: filename too long\n", prog);
-        exit(1);
-    }
-
-    strcpy(outfile, file);
-    strcat(outfile, GZ_SUFFIX);
-
-    in = fopen(file, "rb");
-    if (in == NULL) {
-        perror(file);
-        exit(1);
-    }
-    out = gzopen(outfile, mode);
-    if (out == NULL) {
-        fprintf(stderr, "%s: can't gzopen %s\n", prog, outfile);
-        exit(1);
-    }
-    gz_compress(in, out);
-
-    unlink(file);
-}
-
-
-/* ===========================================================================
- * Uncompress the given file and remove the original.
- */
-void file_uncompress(file)
-    char  *file;
-{
-    local char buf[MAX_NAME_LEN];
-    char *infile, *outfile;
-    FILE  *out;
-    gzFile in;
-    size_t len = strlen(file);
-
-    if (len + strlen(GZ_SUFFIX) >= sizeof(buf)) {
-        fprintf(stderr, "%s: filename too long\n", prog);
-        exit(1);
-    }
-
-    strcpy(buf, file);
-
-    if (len > SUFFIX_LEN && strcmp(file+len-SUFFIX_LEN, GZ_SUFFIX) == 0) {
-        infile = file;
-        outfile = buf;
-        outfile[len-3] = '\0';
-    } else {
-        outfile = file;
-        infile = buf;
-        strcat(infile, GZ_SUFFIX);
-    }
-    in = gzopen(infile, "rb");
-    if (in == NULL) {
-        fprintf(stderr, "%s: can't gzopen %s\n", prog, infile);
-        exit(1);
-    }
-    out = fopen(outfile, "wb");
-    if (out == NULL) {
-        perror(file);
-        exit(1);
-    }
-
-    gz_uncompress(in, out);
-
-    unlink(infile);
-}
-
-
-/* ===========================================================================
- * Usage:  minigzip [-c] [-d] [-f] [-h] [-r] [-1 to -9] [files...]
- *   -c : write to standard output
- *   -d : decompress
- *   -f : compress with Z_FILTERED
- *   -h : compress with Z_HUFFMAN_ONLY
- *   -r : compress with Z_RLE
- *   -1 to -9 : compression level
- */
-
-int main(argc, argv)
-    int argc;
-    char *argv[];
-{
-    int copyout = 0;
-    int uncompr = 0;
-    gzFile file;
-    char *bname, outmode[20];
-
-    strcpy(outmode, "wb6 ");
-
-    prog = argv[0];
-    bname = strrchr(argv[0], '/');
-    if (bname)
-      bname++;
-    else
-      bname = argv[0];
-    argc--, argv++;
-
-    if (!strcmp(bname, "gunzip"))
-      uncompr = 1;
-    else if (!strcmp(bname, "zcat"))
-      copyout = uncompr = 1;
-
-    while (argc > 0) {
-      if (strcmp(*argv, "-c") == 0)
-        copyout = 1;
-      else if (strcmp(*argv, "-d") == 0)
-        uncompr = 1;
-      else if (strcmp(*argv, "-f") == 0)
-        outmode[3] = 'f';
-      else if (strcmp(*argv, "-h") == 0)
-        outmode[3] = 'h';
-      else if (strcmp(*argv, "-r") == 0)
-        outmode[3] = 'R';
-      else if ((*argv)[0] == '-' && (*argv)[1] >= '1' && (*argv)[1] <= '9' &&
-               (*argv)[2] == 0)
-        outmode[2] = (*argv)[1];
-      else
-        break;
-      argc--, argv++;
-    }
-    if (outmode[3] == ' ')
-        outmode[3] = 0;
-    if (argc == 0) {
-        SET_BINARY_MODE(stdin);
-        SET_BINARY_MODE(stdout);
-        if (uncompr) {
-            file = gzdopen(fileno(stdin), "rb");
-            if (file == NULL) error("can't gzdopen stdin");
-            gz_uncompress(file, stdout);
-        } else {
-            file = gzdopen(fileno(stdout), outmode);
-            if (file == NULL) error("can't gzdopen stdout");
-            gz_compress(stdin, file);
-        }
-    } else {
-        if (copyout) {
-            SET_BINARY_MODE(stdout);
-        }
-        do {
-            if (uncompr) {
-                if (copyout) {
-                    file = gzopen(*argv, "rb");
-                    if (file == NULL)
-                        fprintf(stderr, "%s: can't gzopen %s\n", prog, *argv);
-                    else
-                        gz_uncompress(file, stdout);
-                } else {
-                    file_uncompress(*argv);
-                }
-            } else {
-                if (copyout) {
-                    FILE * in = fopen(*argv, "rb");
-
-                    if (in == NULL) {
-                        perror(*argv);
-                    } else {
-                        file = gzdopen(fileno(stdout), outmode);
-                        if (file == NULL) error("can't gzdopen stdout");
-
-                        gz_compress(in, file);
-                    }
-
-                } else {
-                    file_compress(*argv, outmode);
-                }
-            }
-        } while (argv++, --argc);
-    }
-    return 0;
-}
diff --git a/dep/zlib/trees.c b/dep/zlib/trees.c
index 8c32b214b1d..1fd7759ef00 100644
--- a/dep/zlib/trees.c
+++ b/dep/zlib/trees.c
@@ -146,8 +146,8 @@ local void send_tree      OF((deflate_state *s, ct_data *tree, int max_code));
 local int  build_bl_tree  OF((deflate_state *s));
 local void send_all_trees OF((deflate_state *s, int lcodes, int dcodes,
                               int blcodes));
-local void compress_block OF((deflate_state *s, ct_data *ltree,
-                              ct_data *dtree));
+local void compress_block OF((deflate_state *s, const ct_data *ltree,
+                              const ct_data *dtree));
 local int  detect_data_type OF((deflate_state *s));
 local unsigned bi_reverse OF((unsigned value, int length));
 local void bi_windup      OF((deflate_state *s));
@@ -972,7 +972,8 @@ void ZLIB_INTERNAL _tr_flush_block(s, buf, stored_len, last)
     } else if (s->strategy == Z_FIXED || static_lenb == opt_lenb) {
 #endif
         send_bits(s, (STATIC_TREES<<1)+last, 3);
-        compress_block(s, (ct_data *)static_ltree, (ct_data *)static_dtree);
+        compress_block(s, (const ct_data *)static_ltree,
+                       (const ct_data *)static_dtree);
 #ifdef DEBUG
         s->compressed_len += 3 + s->static_len;
 #endif
@@ -980,7 +981,8 @@ void ZLIB_INTERNAL _tr_flush_block(s, buf, stored_len, last)
         send_bits(s, (DYN_TREES<<1)+last, 3);
         send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1,
                        max_blindex+1);
-        compress_block(s, (ct_data *)s->dyn_ltree, (ct_data *)s->dyn_dtree);
+        compress_block(s, (const ct_data *)s->dyn_ltree,
+                       (const ct_data *)s->dyn_dtree);
 #ifdef DEBUG
         s->compressed_len += 3 + s->opt_len;
 #endif
@@ -1057,8 +1059,8 @@ int ZLIB_INTERNAL _tr_tally (s, dist, lc)
  */
 local void compress_block(s, ltree, dtree)
     deflate_state *s;
-    ct_data *ltree; /* literal tree */
-    ct_data *dtree; /* distance tree */
+    const ct_data *ltree; /* literal tree */
+    const ct_data *dtree; /* distance tree */
 {
     unsigned dist;      /* distance of matched string */
     int lc;             /* match length or unmatched char (if dist == 0) */
diff --git a/dep/zlib/uncompr.c b/dep/zlib/uncompr.c
index ad98be3a5d8..242e9493dff 100644
--- a/dep/zlib/uncompr.c
+++ b/dep/zlib/uncompr.c
@@ -30,7 +30,7 @@ int ZEXPORT uncompress (dest, destLen, source, sourceLen)
     z_stream stream;
     int err;
 
-    stream.next_in = (Bytef*)source;
+    stream.next_in = (z_const Bytef *)source;
     stream.avail_in = (uInt)sourceLen;
     /* Check for source > 64K on 16-bit machine: */
     if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
diff --git a/dep/zlib/zconf.h b/dep/zlib/zconf.h
index 8a46a58b30c..9987a775530 100644
--- a/dep/zlib/zconf.h
+++ b/dep/zlib/zconf.h
@@ -1,5 +1,5 @@
 /* zconf.h -- configuration of the zlib compression library
- * Copyright (C) 1995-2012 Jean-loup Gailly.
+ * Copyright (C) 1995-2013 Jean-loup Gailly.
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -21,6 +21,7 @@
 #  define _dist_code            z__dist_code
 #  define _length_code          z__length_code
 #  define _tr_align             z__tr_align
+#  define _tr_flush_bits        z__tr_flush_bits
 #  define _tr_flush_block       z__tr_flush_block
 #  define _tr_init              z__tr_init
 #  define _tr_stored_block      z__tr_stored_block
@@ -77,6 +78,7 @@
 #      define gzopen_w              z_gzopen_w
 #    endif
 #    define gzprintf              z_gzprintf
+#    define gzvprintf             z_gzvprintf
 #    define gzputc                z_gzputc
 #    define gzputs                z_gzputs
 #    define gzread                z_gzread
@@ -103,6 +105,7 @@
 #  define inflateReset          z_inflateReset
 #  define inflateReset2         z_inflateReset2
 #  define inflateSetDictionary  z_inflateSetDictionary
+#  define inflateGetDictionary  z_inflateGetDictionary
 #  define inflateSync           z_inflateSync
 #  define inflateSyncPoint      z_inflateSyncPoint
 #  define inflateUndermine      z_inflateUndermine
@@ -388,20 +391,14 @@ typedef uLong FAR uLongf;
    typedef Byte       *voidp;
 #endif
 
-/* ./configure may #define Z_U4 here */
-
 #if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
 #  include <limits.h>
 #  if (UINT_MAX == 0xffffffffUL)
 #    define Z_U4 unsigned
-#  else
-#    if (ULONG_MAX == 0xffffffffUL)
-#      define Z_U4 unsigned long
-#    else
-#      if (USHRT_MAX == 0xffffffffUL)
-#        define Z_U4 unsigned short
-#      endif
-#    endif
+#  elif (ULONG_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned long
+#  elif (USHRT_MAX == 0xffffffffUL)
+#    define Z_U4 unsigned short
 #  endif
 #endif
 
@@ -425,8 +422,16 @@ typedef uLong FAR uLongf;
 #  endif
 #endif
 
+#if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#  ifndef Z_SOLO
+#    include <stdarg.h>         /* for va_list */
+#  endif
+#endif
+
 #ifdef _WIN32
-#  include <stddef.h>           /* for wchar_t */
+#  ifndef Z_SOLO
+#    include <stddef.h>         /* for wchar_t */
+#  endif
 #endif
 
 /* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
@@ -435,7 +440,7 @@ typedef uLong FAR uLongf;
  * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
  * equivalently requesting no 64-bit operations
  */
-#if defined(LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
+#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
 #  undef _LARGEFILE64_SOURCE
 #endif
 
@@ -443,7 +448,7 @@ typedef uLong FAR uLongf;
 #  define Z_HAVE_UNISTD_H
 #endif
 #ifndef Z_SOLO
-#  if defined(Z_HAVE_UNISTD_H) || defined(LARGEFILE64_SOURCE)
+#  if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
 #    include <unistd.h>         /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
 #    ifdef VMS
 #      include <unixio.h>       /* for off_t */
diff --git a/dep/zlib/zlib.h b/dep/zlib/zlib.h
index 3edf3acdb57..3e0c7672ac5 100644
--- a/dep/zlib/zlib.h
+++ b/dep/zlib/zlib.h
@@ -1,7 +1,7 @@
 /* zlib.h -- interface of the 'zlib' general purpose compression library
-  version 1.2.7, May 2nd, 2012
+  version 1.2.8, April 28th, 2013
 
-  Copyright (C) 1995-2012 Jean-loup Gailly and Mark Adler
+  Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -37,11 +37,11 @@
 extern "C" {
 #endif
 
-#define ZLIB_VERSION "1.2.7"
-#define ZLIB_VERNUM 0x1270
+#define ZLIB_VERSION "1.2.8"
+#define ZLIB_VERNUM 0x1280
 #define ZLIB_VER_MAJOR 1
 #define ZLIB_VER_MINOR 2
-#define ZLIB_VER_REVISION 7
+#define ZLIB_VER_REVISION 8
 #define ZLIB_VER_SUBREVISION 0
 
 /*
@@ -839,6 +839,21 @@ ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
    inflate().
 */
 
+ZEXTERN int ZEXPORT inflateGetDictionary OF((z_streamp strm,
+                                             Bytef *dictionary,
+                                             uInt  *dictLength));
+/*
+     Returns the sliding dictionary being maintained by inflate.  dictLength is
+   set to the number of bytes in the dictionary, and that many bytes are copied
+   to dictionary.  dictionary must have enough space, where 32768 bytes is
+   always enough.  If inflateGetDictionary() is called with dictionary equal to
+   Z_NULL, then only the dictionary length is returned, and nothing is copied.
+   Similary, if dictLength is Z_NULL, then it is not set.
+
+     inflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the
+   stream state is inconsistent.
+*/
+
 ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
 /*
      Skips invalid compressed data until a possible full flush point (see above
@@ -846,7 +861,7 @@ ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
    available input is skipped.  No output is provided.
 
      inflateSync searches for a 00 00 FF FF pattern in the compressed data.
-   All full flush points have this pattern, but not all occurences of this
+   All full flush points have this pattern, but not all occurrences of this
    pattern are full flush points.
 
      inflateSync returns Z_OK if a possible full flush point has been found,
@@ -1007,7 +1022,8 @@ ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits,
    the version of the header file.
 */
 
-typedef unsigned (*in_func) OF((void FAR *, unsigned char FAR * FAR *));
+typedef unsigned (*in_func) OF((void FAR *,
+                                z_const unsigned char FAR * FAR *));
 typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned));
 
 ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,
@@ -1015,11 +1031,12 @@ ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,
                                     out_func out, void FAR *out_desc));
 /*
      inflateBack() does a raw inflate with a single call using a call-back
-   interface for input and output.  This is more efficient than inflate() for
-   file i/o applications in that it avoids copying between the output and the
-   sliding window by simply making the window itself the output buffer.  This
-   function trusts the application to not change the output buffer passed by
-   the output function, at least until inflateBack() returns.
+   interface for input and output.  This is potentially more efficient than
+   inflate() for file i/o applications, in that it avoids copying between the
+   output and the sliding window by simply making the window itself the output
+   buffer.  inflate() can be faster on modern CPUs when used with large
+   buffers.  inflateBack() trusts the application to not change the output
+   buffer passed by the output function, at least until inflateBack() returns.
 
      inflateBackInit() must be called first to allocate the internal state
    and to initialize the state with the user-provided window buffer.
@@ -1736,6 +1753,13 @@ ZEXTERN int            ZEXPORT deflateResetKeep OF((z_streamp));
 ZEXTERN gzFile         ZEXPORT gzopen_w OF((const wchar_t *path,
                                             const char *mode));
 #endif
+#if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#  ifndef Z_SOLO
+ZEXTERN int            ZEXPORTVA gzvprintf Z_ARG((gzFile file,
+                                                  const char *format,
+                                                  va_list va));
+#  endif
+#endif
 
 #ifdef __cplusplus
 }
diff --git a/dep/zlib/zutil.c b/dep/zlib/zutil.c
index 65e0d3b72b0..23d2ebef008 100644
--- a/dep/zlib/zutil.c
+++ b/dep/zlib/zutil.c
@@ -14,7 +14,7 @@
 struct internal_state      {int dummy;}; /* for buggy compilers */
 #endif
 
-const char * const z_errmsg[10] = {
+z_const char * const z_errmsg[10] = {
 "need dictionary",     /* Z_NEED_DICT       2  */
 "stream end",          /* Z_STREAM_END      1  */
 "",                    /* Z_OK              0  */
diff --git a/dep/zlib/zutil.h b/dep/zlib/zutil.h
index 4e3dcc6ae9f..24ab06b1cf6 100644
--- a/dep/zlib/zutil.h
+++ b/dep/zlib/zutil.h
@@ -1,5 +1,5 @@
 /* zutil.h -- internal interface and configuration of the compression library
- * Copyright (C) 1995-2012 Jean-loup Gailly.
+ * Copyright (C) 1995-2013 Jean-loup Gailly.
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -44,13 +44,13 @@ typedef unsigned short ush;
 typedef ush FAR ushf;
 typedef unsigned long  ulg;
 
-extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
+extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
 /* (size given to avoid silly warnings with Visual C++) */
 
 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
 
 #define ERR_RETURN(strm,err) \
-  return (strm->msg = (char*)ERR_MSG(err), (err))
+  return (strm->msg = ERR_MSG(err), (err))
 /* To be used only when the state is known to be valid */
 
         /* common constants */
@@ -168,7 +168,8 @@ extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
 #endif
 
 /* provide prototypes for these when building zlib without LFS */
-#if !defined(_WIN32) && (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
+#if !defined(_WIN32) && \
+    (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
     ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
     ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
 #endif