- add controls.wingsDown() wrapper

- carrier-bindings.xml: remove trailing spaces & add some blanks

Input/Keyboard/carrier-bindings.xml

@@ -17,6 +17,7 @@
      </binding>
    </mod-up>
  </key>
+
  <!-- map keys for launch-bar -->
  <key n="76">
    <name>L</name>
@@ -34,6 +35,7 @@
      </binding>
    </mod-up>
  </key>
+
  <!-- map keys for arrester hook -->
  <key n="79">
    <name>O</name>
@@ -44,6 +46,7 @@
      <value type="double">1.0</value>
    </binding>
  </key>
+
  <key n="111">
    <name>o</name>
    <desc>Hook Up.</desc>
@@ -53,23 +56,35 @@
      <value type="double">0.0</value>
    </binding>
  </key>
+
  <!-- map keys for wing fold -->
  <key n="70">
    <name>F</name>
    <desc>Wing Fold Down.</desc>
    <binding>
-     <command>property-assign</command>
-     <property>controls/flight/wing-fold</property>
-     <value type="double">1.0</value>
+     <command>nasal</command>
+     <script>controls.wingsDown(1)</script>
    </binding>
+   <mod-up>
+     <binding>
+       <command>nasal</command>
+       <script>controls.wingsDown(0)</script>
+     </binding>
+   </mod-up>
  </key>
+
  <key n="102">
    <name>f</name>
    <desc>Wing Fold Up.</desc>
    <binding>
-     <command>property-assign</command>
-     <property>controls/flight/wing-fold</property>
-     <value type="double">0.0</value>
+     <command>nasal</command>
+     <script>controls.wingsDown(-1)</script>
    </binding>
+   <mod-up>
+     <binding>
+       <command>nasal</command>
+       <script>controls.wingsDown(0)</script>
+     </binding>
+   </mod-up>
  </key>
 </PropertyList>

Nasal/controls.nas

@@ -98,6 +98,10 @@ var wingSweep = func(step) {
     setprop("/controls/flight/wing-sweep", val > 1 ? 1 : val < 0 ? 0 : val);
 }
 
+var wingsDown = func(v) {
+    if(v) setprop("/controls/flight/wing-fold", v > 0);
+}
+
 var stepSpoilers = func(step) {
     if(props.globals.getNode("/sim/spoilers") != nil) {
         stepProps("/controls/flight/spoilers", "/sim/spoilers", step);