Added OUYA controller mapping
Fixed neko crash in Input
Backdrop repeated one too many in both x and y on native.
Sound wasn't stop at the end on native.
Merge branch 'master' of https://github.com/HaxePunk/HaxePunk

* 'master' of https://github.com/HaxePunk/HaxePunk:
  Sound wasn't stop at the end on native.
  Backdrop repeated one too many in both x and y on native.
  Fixed neko crash in Input
  Added OUYA controller mapping