am 4fc04f16: Merge "RTP: Add a baseline echo suppressor." into gingerbread

Merge commit '4fc04f160f5ad99ce618084c689b239a2644deca' into gingerbread-plus-aosp

* commit '4fc04f160f5ad99ce618084c689b239a2644deca':
  RTP: Add a baseline echo suppressor.