am 3b712fda: Merge "Add \'cpufeatures\' library to perform runtime CPU family/features detection." into eclair

Merge commit '3b712fda34a3d7a71e6a4ba6ee495b178b2c1830' into eclair-plus-aosp

* commit '3b712fda34a3d7a71e6a4ba6ee495b178b2c1830':
  Add 'cpufeatures' library to perform runtime CPU family/features detection.