am 987e7fb2: Merge change I9a275773 into eclair-mr2

Merge commit '987e7fb2d43130deb756353ca8f098b0a0a3beeb' into eclair-mr2-plus-aosp

* commit '987e7fb2d43130deb756353ca8f098b0a0a3beeb':
  Initial check in of AMR (NB and WB) decoders based on PV source code.