Core/Build: Fix compile under Ubuntu 13.04 and openSUSE 12.3 (and probably other new distros)

Closes #9832
Closes #9740

CMakeLists.txt

@@ -51,6 +51,8 @@ include(CheckPlatform)
 find_package(PCHSupport)
 find_package(ACE REQUIRED)
 find_package(OpenSSL REQUIRED)
+find_package(Threads REQUIRED)
+
 if( NOT USE_MYSQL_SOURCES )
   find_package(MySQL REQUIRED)
 endif()

src/server/authserver/CMakeLists.txt

@@ -80,6 +80,8 @@ target_link_libraries(authserver
   shared
   ${MYSQL_LIBRARY}
   ${OPENSSL_LIBRARIES}
+  ${CMAKE_THREAD_LIBS_INIT}
+  ${ACE_LIBRARY}
 )
 
 if( WIN32 )

src/server/worldserver/CMakeLists.txt

@@ -179,6 +179,7 @@ target_link_libraries(worldserver
   ${MYSQL_LIBRARY}
   ${OPENSSL_LIBRARIES}
   ${ZLIB_LIBRARIES}
+  ${CMAKE_THREAD_LIBS_INIT}
 )
 
 if( WIN32 )