Another minor touchscreen fix

When the OS window manager is set to "landscape" mode, touch points were not getting flipped. They are now.

Won't affect most people as most people are not using IR touch frames and those that are, most are not using landscape mode for the player view.

But I want the touch support to be top-notch on this thing, so I give fixing touch related problems priority.

Let me know if any other issues have been popping up and I will gladly take a look at them. But please check the bug report/feature requests threads first.