am c61b0de8: Merge change Id6ccc9bc into eclair-mr2

Merge commit 'c61b0de83bc0c6f7bb1d10bcfc02ab29f3a49caa' into eclair-mr2-plus-aosp

* commit 'c61b0de83bc0c6f7bb1d10bcfc02ab29f3a49caa':
  Update documentation: The width of the image for face detection must be even.