am 2b6d07a5: am 8a424af1: am 14b6d062: Merge changes Ib70e0cf2,I0691cd70 into gingerbread

* commit '2b6d07a51a4692cefea11035eacd257eef24f02c':
  SipService: registers broadcast receivers on demand.
  SipService: release wake lock for cancelled tasks.