FLUTE SDP specification - update status check

Hi All

Status of this doc is:

 - typos and clarifications are dealt with
 - cross-referencing and updating of all references is done
 - the 5 questions we asked to RMT remain open
 - CC and sec are under investigation (haven't checked 
draft-saito-mmusic-sdp-ike-07 yet)
 - MMUSIC warm-up email sent, and a couple of issues quizzed
 - probable will upload an 06 "snapshot" this week, and follow with an 
07 "all ready" version for WGLC (maybe that'll be an 08)

Cheers, Rod & Jani