Copter: enable motor slow start in auto mode

ArduCopter/ArduCopter.pde

@@ -2051,6 +2051,11 @@ void update_throttle_mode(void)
     case THROTTLE_AUTO:
         // auto pilot altitude controller with target altitude held in wp_nav.get_desired_alt()
         if(ap.auto_armed) {
+            // special handling if we are just taking off
+            if (ap.land_complete) {
+                // tell motors to do a slow start.
+                motors.slow_start(true);
+            }
             get_throttle_althold_with_slew(wp_nav.get_desired_alt(), -wp_nav.get_descent_velocity(), wp_nav.get_climb_velocity());
             set_target_alt_for_reporting(wp_nav.get_desired_alt()); // To-Do: return get_destination_alt if we are flying to a waypoint
         }else{