am 096df819: Merge "SipService: send SERVER_ERROR if server doesn\'t provide nonce" into gingerbread

Merge commit '096df8197b9133703d2ed0abb69813db0c8b4129' into gingerbread-plus-aosp

* commit '096df8197b9133703d2ed0abb69813db0c8b4129':
  SipService: send SERVER_ERROR if server doesn't provide nonce