Gamepad/SNES controller issue

I think Joel was pretty keen on keeping the Lite images as free from excess code as it may be the base for any medical version. I can imagine my hacked gamepad code is very much the sort of thing that may want to be excluded.

I suppose we will need to have a separate branch/build with a load more auditing when we move that way, so I am happy for it to be added in to lite. I thought I would just bring it up.