Commits

Enrico Granata committed c06a0722702
After investigating, there is no actual reason why the SpriteKit mirrors had to be disabled on iOS. So, just do the right thing. One change, of course, is to use UIImage on-device instead of NSImage. Both can be built from an NSData, and according to purplefish, the NSData we get back is of the correct image format to be reconstructed on either platform. Fixes rdar://17593122 Swift SVN r20289