Adapted sipsimple.cpim to new basic SIP objects

Ignore-this: e5985d8d794c82a1579830361cc48fdd

darcs-hash:20090616095950-1e3d8-f41e897a6eac400d202563148d09e8c9cd456b11
Adapted sipsimple.msrp to new basic SIP objects

Ignore-this: bf7fee63f220a8cebc7156583dc09bcc

darcs-hash:20090616100105-1e3d8-8f6d0d094a1f1ae48f8246df73a4d86788a3bc19