window: exposed "raise()" function from SDL to bring the specified window to the top of the display stack

project/include/ui/Window.h

@@ -27,6 +27,7 @@ namespace lime {
 			virtual int GetX () = 0;
 			virtual int GetY () = 0;
 			virtual void Move (int x, int y) = 0;
+			virtual void Raise () = 0;
 			virtual void Resize (int width, int height) = 0;
 			virtual void SetEnableTextEvents (bool enable) = 0;
 			virtual bool SetFullscreen (bool fullscreen) = 0;