Merge branch 'wait_in_depot-sx' into jgrpp

Conflicts:
	src/saveload/extended_ver_sl.cpp
	src/saveload/extended_ver_sl.h

src/roadveh_cmd.cpp

@@ -1540,6 +1540,9 @@ static bool RoadVehController(RoadVehicle *v)
 
 	if (v->current_order.IsType(OT_LOADING)) return true;
 
+	v->HandleWaiting(false);
+	if (v->current_order.IsType(OT_WAITING)) return true;
+
 	if (v->IsInDepot() && RoadVehLeaveDepot(v, true)) return true;
 
 	v->ShowVisualEffect();