ios: arm64: fix bitness detection of system
ios: arm64: fix PVR addon load

fix arch name detection by adding __arm64__ macro
ios: arm64: lock atomics port for arm64

TODO: This is a dirty hack. Currently, built-in CAS
      function is used and CAS2 (64-bit) is disabled
      for arm64. This may be a bit confusing, since
      32-bit func CAS is used. But it actually works,
      because sizeof(long) == sizeof(long long) on
      64-bit platforms.
ios: arm64: support 64-bit arm arch detection
[ios64] - fixed offsets into the eventmem for arm64 - fixes bt keyboard cursor keys when compiled for arm64
ios: arm64: depends: fix PVR plugins load
ios: arm64: backport latest ffmpeg aarch64 patches
ios: arm64: update gas-preprocessor

libav/gas-preprocessor@cafe6e5
ios: packaging: use new icon for cydia
ios: arm64: sync upstream ffmpeg
ios: arm64: update gas-preprocessor

libav/gas-preprocessor@03e2321
ios: arm64: update libffi to v3.1
ios: arm64: update pcre to v8.35
[osx/ios/atv2] - fix missing _DEBUG and NDEBUG defines due to missing inheritance in the target level xcconfig files

Conflicts:
	tools/darwin/Configurations/App-ATV2.xcconfig
ios: arm64: update gas-preprocessor

libav/gas-preprocessor@72887b9
ios: arm64: sync upstream ffmpeg aarch64 patches
ios: arm64: fix libssh build with Xcode 6
ios: arm64: fix pvr addons build with Xcode 6
ios: arm64 fix pil build with Xcode 6
ios: libRTV fix build for Xcode 6