APM: rename airspeed_cruise to airspeed_cruise_cm to make the units clearer

it is in cm/s, not m/s

ArduPlane/ArduPlane.pde

@@ -995,7 +995,7 @@ static void update_current_flight_mode(void)
 					if(nav_pitch < (long)takeoff_pitch)
 						nav_pitch = (long)takeoff_pitch;
 				} else {
-					nav_pitch = (long)((float)g_gps->ground_speed / (float)g.airspeed_cruise * (float)takeoff_pitch * 0.5);
+					nav_pitch = (long)((float)g_gps->ground_speed / (float)g.airspeed_cruise_cm * (float)takeoff_pitch * 0.5);
 					nav_pitch = constrain(nav_pitch, 500l, (long)takeoff_pitch);
 				}
 

ArduPlane/Attitude.pde

@@ -210,7 +210,7 @@ static void calc_nav_roll()
 	if(airspeed.use()) {
 		speed = airspeed.get_airspeed();
 	} else {
-		speed = g.airspeed_cruise*0.01;
+		speed = g.airspeed_cruise_cm*0.01;
 		
 		// Floor the speed so that the user can't enter a bad value
 		if(speed < 6) {
@@ -384,7 +384,7 @@ static void set_servos(void)
 			if (control_mode == FLY_BY_WIRE_B) {
 				flapSpeedSource = ((float)target_airspeed)/100;
 			} else if (airspeed.use()) {
-				flapSpeedSource = g.airspeed_cruise/100;
+				flapSpeedSource = g.airspeed_cruise_cm/100;
 			} else {
 				flapSpeedSource = g.throttle_cruise;
 			}

ArduPlane/Parameters.h

@@ -116,7 +116,7 @@ public:
         k_param_roll_limit,
         k_param_pitch_limit_max,
         k_param_pitch_limit_min,
-        k_param_airspeed_cruise,
+        k_param_airspeed_cruise_cm,
         k_param_RTL_altitude,
         k_param_inverted_flight_ch,
         k_param_min_gndspeed,
@@ -336,7 +336,7 @@ public:
     AP_Int16	log_last_filenumber;		// *** Deprecated - remove with next eeprom number change
     AP_Int8		reset_switch_chan;
     AP_Int8		manual_level;
-    AP_Int16    airspeed_cruise;
+    AP_Int16    airspeed_cruise_cm;
     AP_Int16    min_gndspeed;
     AP_Int16    pitch_trim;
     AP_Int16    RTL_altitude;
@@ -455,7 +455,7 @@ public:
         log_last_filenumber     (0),
         reset_switch_chan		(0),
         manual_level			(MANUAL_LEVEL),
-        airspeed_cruise         (AIRSPEED_CRUISE_CM),
+        airspeed_cruise_cm      (AIRSPEED_CRUISE_CM),
         min_gndspeed            (MIN_GNDSPEED_CM),
         pitch_trim              (0),
         RTL_altitude            (ALT_HOLD_HOME_CM),

ArduPlane/Parameters.pde

@@ -383,7 +383,7 @@ static const AP_Param::Info var_info[] PROGMEM = {
 	// @Description: Airspeed in cm/s to aim for when airspeed is enabled in auto mode
 	// @Units: cm/s
 	// @User: User
-	GSCALAR(airspeed_cruise,        "TRIM_ARSPD_CM"),
+	GSCALAR(airspeed_cruise_cm,        "TRIM_ARSPD_CM"),
 
     // @Param: MIN_GNDSPD_CM
 	// @DisplayName: Minimum ground speed

ArduPlane/commands_logic.pde

@@ -523,7 +523,7 @@ static void do_change_speed()
 	{
 		case 0: // Airspeed
 			if(next_nonnav_command.alt > 0)
-				g.airspeed_cruise.set(next_nonnav_command.alt * 100);
+				g.airspeed_cruise_cm.set(next_nonnav_command.alt * 100);
 			break;
 		case 1: // Ground speed
 			g.min_gndspeed.set(next_nonnav_command.alt * 100);

ArduPlane/navigation.pde

@@ -67,7 +67,7 @@ static void calc_airspeed_errors()
     float aspeed_cm = airspeed.get_airspeed_cm();
 
     // Normal airspeed target
-    target_airspeed = g.airspeed_cruise;
+    target_airspeed = g.airspeed_cruise_cm;
 
     // FBW_B airspeed target
     if (control_mode == FLY_BY_WIRE_B) {

ArduPlane/radio.pde

@@ -90,7 +90,7 @@ static void read_radio()
 
 	if (g.channel_throttle.servo_out > 50) {
 		if (airspeed.use()) {
-			airspeed_nudge = (g.flybywire_airspeed_max * 100 - g.airspeed_cruise) * ((g.channel_throttle.norm_input()-0.5) / 0.5);
+			airspeed_nudge = (g.flybywire_airspeed_max * 100 - g.airspeed_cruise_cm) * ((g.channel_throttle.norm_input()-0.5) / 0.5);
         } else {
 			throttle_nudge = (g.throttle_max - g.throttle_cruise) * ((g.channel_throttle.norm_input()-0.5) / 0.5);
 		}