Remove uselsess setting

darcs-hash:20090718060350-58252-70fc55979dd69e4af91e0f95221e9d03676ae3d7
Added setting to trace notifications to file

darcs-hash:20090718113522-58252-33d364d599be3aa43d4531bc6212762318920ba4
Added _pjsip_msg_to_dict function to sipsimple/core.util.pxi

Ignore-this: 6e24900d9da84cd5231ff72e0662c1f6

darcs-hash:20090618122817-1e3d8-f7f810282d705d3824b173c76ffd548ab65ebdfc