am cfd55579: OMXCodec now notifies the reader of changes in the output format by returning a special result/error code.

Merge commit 'cfd55579c2e20514b181809dfaf30bd6f7e04c7e' into eclair-mr2-plus-aosp

* commit 'cfd55579c2e20514b181809dfaf30bd6f7e04c7e':
  OMXCodec now notifies the reader of changes in the output format by returning a special result/error code.