Android make files changes for webrtc
Build script change
webrtc build branch change
Updated build submodule
Android gyp and gypi changes for make file generations
updated for 64 bit webrtc build
Create README.md
Changes for android libs build on Mac-OS host
Updated script for mac platform build
Merge remote-tracking branch 'origin/20131223-webrtc_android' into 20140204-federated-android

# By astro (3) and others
# Via vickyggin
* origin/20131223-webrtc_android:
  Updated script for mac platform build
  Changes for android libs build on Mac-OS host
  Create README.md
  updated for 64 bit webrtc build
  Android gyp and gypi changes for make file generations
  Updated build submodule
  webrtc build branch change
  Build script change
  Android make files changes for webrtc