Map local guids 6.x -> 4.3.4

Ported the following commits:
ca83e14f8b
ee1c1b97be
18e4ab6911
bf37446b3c
cb854a2b7b

sql/updates/characters/2015_08_26_00_characters_from_335.sql

@@ -0,0 +1,18 @@
+-- Keep only the highest guid PvE or PvP (not bones) corpse per player guid
+DELETE c FROM `corpse` c LEFT JOIN
+(
+    SELECT MAX(`guid`) AS id
+    FROM `corpse`
+    WHERE `corpseType` IN (1,2)
+    GROUP BY `guid`
+) corpsetemp
+ON c.`guid` = corpsetemp.`id`
+WHERE corpsetemp.`id` IS NULL;
+
+ALTER TABLE `corpse_phases`
+  DROP PRIMARY KEY,
+  DROP `Guid`,
+  DROP `CorpseType`,
+  DROP `Time`,
+  CHANGE `OwnerGuid` `OwnerGuid` int(10) unsigned NOT NULL DEFAULT '0' FIRST,
+  ADD PRIMARY KEY (`OwnerGuid`, `PhaseId`);