Core/Transports

* Rewritten path generation, now uses splines - timers are a lot more accurate now
* Implemented stopping transports
* Implemented spawning transports in instances
* Implemented spawning gameobjects as transport passengers
* Transport passengers are now stored in creature/gameobject table using gameobject_template.data6 from transport's template as map id

src/server/game/AI/SmartScripts/SmartScriptMgr.h

@@ -907,6 +907,7 @@ struct SmartAction
         struct
         {
             uint32 pointId;
+            uint32 transport;
         } MoveToPos;
 
         struct