is_vtol flag in vehicle_status

Getting rid of the autostart based checks if the system is a vtol
Fixes #1503

src/modules/uORB/topics/vehicle_status.h

@@ -185,7 +185,9 @@ struct vehicle_status_s {
 	int32_t	system_id;				/**< system id, inspired by MAVLink's system ID field */
 	int32_t component_id;				/**< subsystem / component id, inspired by MAVLink's component ID field */
 
-	bool is_rotary_wing;
+	bool is_rotary_wing;				/**< True if system is in rotary wing configuration, so for a VTOL
+							  this is only true while flying as a multicopter */
+	bool is_vtol;					/**< True if the system is VTOL capable */
 
 	bool condition_battery_voltage_valid;
 	bool condition_system_in_air_restore;	/**< true if we can restore in mid air */