Added --trace-notifications to sip_subscribe_winfo

Ignore-this: 7f85bef6f5141c70c3273ab0be36e5de

darcs-hash:20090406135335-1e3d8-150314b844d6a4329960e8a943625c1a8004af90
Added item to TODO

darcs-hash:20090406151239-58103-74f26955e51f0fa3848a8ac6ed2bb5ca75fd38f9