am 3fbfee2f: Merge "SipService: add wake lock for incoming INVITE packets." into gingerbread

Merge commit '3fbfee2febf13bcc46c389ebecbf91465ef211b7' into gingerbread-plus-aosp

* commit '3fbfee2febf13bcc46c389ebecbf91465ef211b7':
  SipService: add wake lock for incoming INVITE packets.