(svn r6637) -Codechange: merged all (vehicle type)EnterDepot into VehicleEnterDepot()

This revealed duplicated code like aircraft lists got invalidated twice
   Moved invalidation of the vehicle detail window to VehicleServiceInDepot() as it should always be updated when serviced

rail_cmd.c

@@ -2006,7 +2006,7 @@ static uint32 VehicleEnter_Track(Vehicle *v, TileIndex tile, int x, int y)
 			v->vehstatus |= VS_HIDDEN; /* hide it */
 			v->direction = ReverseDir(v->direction);
 			if (v->next == NULL)
-				TrainEnterDepot(v, tile);
+				VehicleEnterDepot(v);
 			v->tile = tile;
 			InvalidateWindow(WC_VEHICLE_DEPOT, tile);
 			return 4;