* Allow the use of referenced trainer / vendor data.

* This will reduce the size of the trainer / vendor tables a LOT.
* Current tables will continue to work as/is until the refs can be made.
* Huge thanks to XTElite1
* Credits for patch to Cycrow

--HG--
branch : trunk

src/game/ObjectMgr.h

@@ -429,6 +429,7 @@ class ObjectMgr
         Player* GetPlayer(uint64 guid) const { return ObjectAccessor::FindPlayer(guid); }
 
         static GameObjectInfo const *GetGameObjectInfo(uint32 id) { return sGOStorage.LookupEntry<GameObjectInfo>(id); }
+        int LoadReferenceVendor(int32 vendor, int32 item_id, std::set<uint32> *skip_vendors);
 
         void LoadGameobjectInfo();
         void AddGameobjectInfo(GameObjectInfo *goinfo);
@@ -691,6 +692,8 @@ class ObjectMgr
 
         void LoadVendors();
         void LoadTrainerSpell();
+        bool AddSpellToTrainer(int32 entry, int32 spell, Field *fields, std::set<uint32> *skip_trainers, std::set<uint32> *talentIds);
+        int  LoadReferenceTrainer(int32 trainer, int32 spell, std::set<uint32> *skip_trainers, std::set<uint32> *talentIds);
         void LoadGMTickets();
 
         std::string GeneratePetName(uint32 entry);