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/Entities/Corpse/Corpse.cpp

@@ -54,7 +54,7 @@ void Corpse::AddToWorld()
 {
     ///- Register the corpse for guid lookup
     if (!IsInWorld())
-        ObjectAccessor::Instance().AddObject(this);
+        sObjectAccessor.AddObject(this);
 
     Object::AddToWorld();
 }
@@ -63,7 +63,7 @@ void Corpse::RemoveFromWorld()
 {
     ///- Remove the corpse from the accessor
     if (IsInWorld())
-        ObjectAccessor::Instance().RemoveObject(this);
+        sObjectAccessor.RemoveObject(this);
 
     Object::RemoveFromWorld();
 }