am ebfe5632: am e006e4d2: Merge changes Iae1913fb,I38dbefef into gingerbread

Merge commit 'ebfe5632db275a89b49ab828064ba90db59702cf'

* commit 'ebfe5632db275a89b49ab828064ba90db59702cf':
  RTP: Enable GSM codec.
  RTP: Refactor out G711 codecs into another file.