am 781ac162: Merge change I8768f2cc into eclair-mr2

Merge commit '781ac16283574ec07cd7b13d67b54b7b4c2c15cb' into eclair-mr2-plus-aosp

* commit '781ac16283574ec07cd7b13d67b54b7b4c2c15cb':
  A small sample tool to encode pcm audio data to amr, decode it again and play it. Some changes to OMXCodec to properly configure the AMR decoder(s).