am dfd1484e: Merge "RTP: Adjust the jitter buffer to 512ms." into gingerbread

Merge commit 'dfd1484e3ba9c305730ccb39859919ca0e97d720' into gingerbread-plus-aosp

* commit 'dfd1484e3ba9c305730ccb39859919ca0e97d720':
  RTP: Adjust the jitter buffer to 512ms.