Renamed argument of set_offered_local_sdp method of Invitiation

darcs-hash:20090106190031-58103-e6e0b2f6431213cfa835c0b43e023fc860fd7768
Updated TODO

darcs-hash:20090107131046-58103-b6b00aa8e2dc3bb8425b01b62a32a34ea114fddb