Plane: init rc output after quadplane setup

this ensures first PWM pulses are correct

ArduPlane/radio.cpp

@@ -46,8 +46,6 @@ void Plane::init_rc_in()
     channel_pitch->set_default_dead_zone(30);
     channel_rudder->set_default_dead_zone(30);
     channel_throttle->set_default_dead_zone(30);
-
-    update_aux();
 }
 
 /*
@@ -69,6 +67,7 @@ void Plane::init_rc_out()
         channel_throttle->enable_out();
     }
     channel_rudder->enable_out();
+    update_aux();
     RC_Channel_aux::enable_aux_servos();
 
     // Initialization of servo outputs

ArduPlane/system.cpp

@@ -196,7 +196,6 @@ void Plane::init_ardupilot()
     gps.init(&DataFlash, serial_manager);
 
     init_rc_in();               // sets up rc channels from radio
-    init_rc_out();              // sets up the timer libs
 
     relay.init();
 
@@ -235,6 +234,10 @@ void Plane::init_ardupilot()
 
     quadplane.setup();
 
+    // don't initialise rc output until after quadplane is setup as
+    // that can change initial values of channels
+    init_rc_out();
+    
     // choose the nav controller
     set_nav_controller();