Get rid of Trinity Singleton and Threading patterns and replace them with ACE_Singletons and ACE_GUARD_x macro´s with ACE_Thread_Mutex´es respectively.

Also get rid of unused CountedReference class that used Trinity threading pattern.

--HG--
branch : trunk

src/server/game/Grids/ObjectGridLoader.cpp

@@ -151,7 +151,7 @@ void LoadHelper(CellCorpseSet const& cell_corpses, CellPair &cell, CorpseMapType
 
         uint32 player_guid = itr->first;
 
-        Corpse *obj = ObjectAccessor::Instance().GetCorpseForPlayerGUID(player_guid);
+        Corpse *obj = sObjectAccessor.GetCorpseForPlayerGUID(player_guid);
         if (!obj)
             continue;