Replaced time(NULL) on sGameTime.GetGameTime() this is used for better performance.

Original Timer.h divided into 2 parts. Shared project has no need to know about GameTime Singleton.
2 Identical structures with different types are now replaced with one generic templated structure and 2 typedefs.

--HG--
branch : trunk

src/game/PetAI.h

@@ -22,7 +22,7 @@
 #define TRINITY_PETAI_H
 
 #include "CreatureAI.h"
-#include "Timer.h"
+#include "TimeMgr.h"
 
 class Creature;
 class Spell;