also render input system with some nice overlay, added also some keys (F3 and special show/hide controls key)

src/sdl/CInput.h

@@ -171,6 +171,8 @@ public:
 	void flushCommands(void);
 	void flushAll(void);
 
+	void renderOverlay(); // for mouse wrapper gfx or other stuff
+
 private:
 	SDL_Event Event;
 	stInputCommand InputCommand[NUM_INPUTS][NUMBER_OF_COMMANDS];