Add a option to swap frames in modules with two frames (e.g, swap left right frames)

source/app/SubWindowHandle.h

@@ -113,7 +113,7 @@ public:
    */
   Void enableModule( PlaYUVerModuleIf* select_module );
   Void disableModule();
-
+  Void swapModuleFrames();
   /**
    * Show the image at its original size
    */