am ca83c25d: am 4565933f: Merge "SipService: deliver connectivity change to all sessions." into gingerbread

Merge commit 'ca83c25decd0d4dc9c765a2b42424c7974bd496a'

* commit 'ca83c25decd0d4dc9c765a2b42424c7974bd496a':
  SipService: deliver connectivity change to all sessions.