Fix dialog cleanup.
Process timers before the packet.
Improve the proto expectation API.
Rename some telephony structures.
Make dialog match a conntrack entry and use the new telephony API.
Don't bind calls to session but bind dialogs to conntracks.
Fix direction when a proto's conntrack can be matched in both directions.
Save a different CSeq for each direction of a dialog.
Remove 'sess_' from variable name.