Parameters: Added g.retro_loiter which is configurable by the user via the MP.

ArduCopter/Parameters.h

@@ -111,6 +111,7 @@ public:
 	k_param_crosstrack_gain,
 	k_param_auto_land_timeout,
 	k_param_rtl_approach_alt,
+	k_param_retro_loiter,
 
 
 	//
@@ -213,6 +214,7 @@ public:
 	AP_Int8		super_simple;
 	AP_Int8		rtl_land_enabled;
 	AP_Float	rtl_approach_alt;
+	AP_Int8		retro_loiter;
 	AP_Int8		axis_enabled;
 	AP_Int8		copter_leds_mode;	// Operating mode of LED lighting system
 
@@ -334,6 +336,7 @@ public:
 	super_simple			(SUPER_SIMPLE),
 	rtl_land_enabled		(RTL_AUTO_LAND),
 	rtl_approach_alt		(0.0),
+	retro_loiter			(RETRO_LOITER_MODE),
 	axis_enabled			(AXIS_LOCK_ENABLED),
 	copter_leds_mode		(0),
 

ArduCopter/Parameters.pde

@@ -34,6 +34,7 @@ static const AP_Param::Info var_info[] PROGMEM = {
 	GSCALAR(super_simple,	"SUPER_SIMPLE"),
 	GSCALAR(rtl_land_enabled,	"RTL_LAND"),
 	GSCALAR(rtl_approach_alt,	"APPROACH_ALT"),
+	GSCALAR(retro_loiter,	"RETRO_LOITER"),
 
 
 	GSCALAR(waypoint_mode,	"WP_MODE"),