AC_WPNav: rename circle_nav.set_radius to circle_nav.set_radius_cm

libraries/AC_WPNav/AC_Circle.cpp

@@ -138,7 +138,7 @@ void AC_Circle::set_rate(float deg_per_sec)
 }
 
 /// set_circle_rate - set circle rate in degrees per second
-void AC_Circle::set_radius(float radius_cm)
+void AC_Circle::set_radius_cm(float radius_cm)
 {
     _radius = constrain_float(radius_cm, 0, AC_CIRCLE_RADIUS_MAX);
 }

libraries/AC_WPNav/AC_Circle.h

@@ -44,8 +44,8 @@ public:
     /// get_radius - returns radius of circle in cm
     float get_radius() const { return is_positive(_radius)?_radius:_radius_parm; }
 
-    /// set_radius - sets circle radius in cm
-    void set_radius(float radius_cm);
+    /// set_radius_cm - sets circle radius in cm
+    void set_radius_cm(float radius_cm);
 
     /// get_rate - returns target rate in deg/sec held in RATE parameter
     float get_rate() const { return _rate; }