Apply #412.

Add support to gameobject type Transport (11) that should stop like Orgrimmar arena Elevators or pilars.
Patch by Spp and Opterman

--HG--
branch : trunk

src/game/GameObject.h

@@ -590,6 +590,7 @@ class TRINITY_DLL_SPEC GameObject : public WorldObject
         GameObjectValue * GetGOValue() const { return m_goValue; }
 
         bool IsTransport() const;
+        bool IsDynTransport() const;
 
         uint32 GetDBTableGUIDLow() const { return m_DBTableGuid; }