*Fix a bug that player can change to an occupied seat on vehicle.

*Load full creature data for vehicles.

--HG--
branch : trunk

src/game/Vehicle.h

@@ -44,7 +44,7 @@ class Vehicle : public Creature
         void AddToWorld();
         void RemoveFromWorld();
 
-        bool Create (uint32 guidlow, Map *map, uint32 phaseMask, uint32 Entry, uint32 vehicleId, uint32 team);
+        bool Create (uint32 guidlow, Map *map, uint32 phaseMask, uint32 Entry, uint32 vehicleId, uint32 team, const CreatureData * data = NULL);
 
         void setDeathState(DeathState s);                   // overwrite virtual Creature::setDeathState and Unit::setDeathState
         void Update(uint32 diff);                           // overwrite virtual Creature::Update and Unit::Update
@@ -64,6 +64,7 @@ class Vehicle : public Creature
         SeatMap m_Seats;
     protected:
         VehicleEntry const *m_vehicleInfo;
+        uint32 m_usableSeatNum;
 
         void RemoveAllPassengers();