iOS: update few compiler path
iOS: add LaunchScreen.xib for support iPhone 6 and 6 Plus native screen resolution
iOS: install LaunchScreen.xib
iOS: Add launch xib name to info.plist
Merge pull request #6965 from rock88/master

iPhone 6 and 6 Plus support
Correct first next sample calculation.

If it's exactly matching a frame size, we need to return a full frame,
rather than 0.  Fixes #6967.
Merge pull request #6971 from unknownbrackets/atrac-minor

Correct first next sample calculation