AC_WPNav: rename set_loiter_target to init_loiter_target

libraries/AC_WPNav/AC_WPNav.cpp

@@ -114,8 +114,8 @@ AC_WPNav::AC_WPNav(const AP_InertialNav& inav, const AP_AHRS& ahrs, AC_PosContro
 /// loiter controller
 ///
 
-/// set_loiter_target in cm from home
-void AC_WPNav::set_loiter_target(const Vector3f& position, bool reset_I)
+/// init_loiter_target in cm from home
+void AC_WPNav::init_loiter_target(const Vector3f& position, bool reset_I)
 {
     // if reset_I is false we warn position controller not to reset I terms
     if (!reset_I) {

libraries/AC_WPNav/AC_WPNav.h

@@ -58,9 +58,9 @@ public:
     /// loiter controller
     ///
 
-    /// set_loiter_target in cm from home
+    /// init_loiter_target to a position in cm from home
     ///     caller can set reset_I to false to preserve I term since previous time loiter controller ran.  Should only be false when caller is sure that not too much time has passed to invalidate the I terms
-    void set_loiter_target(const Vector3f& position, bool reset_I=true);
+    void init_loiter_target(const Vector3f& position, bool reset_I=true);
 
     /// init_loiter_target - initialize's loiter position and feed-forward velocity from current pos and velocity
     void init_loiter_target();