am fd144d76: Merge "SipAudioCall: remove SipManager dependency." into gingerbread

Merge commit 'fd144d7667d9d050b7fb158276ae4623d4ea83b8' into gingerbread-plus-aosp

* commit 'fd144d7667d9d050b7fb158276ae4623d4ea83b8':
  SipAudioCall: remove SipManager dependency.