muc-channel: create/ref contact when we got new senders
muc-channel: create/ref contact when we got new senders


20071107160103-7fe3f-262d54df60a4bfe3b656d65a5f29ad13d83a4748.gz

freedesktop-unofficial-mirror/telepathy__telepathy-salut,freedesktop-unofficial-mirror/telepathy__telepathy-salut,freedesktop-unofficial-mirror/telepathy__telepathy-salut,freedesktop-unofficial-mirror/telepathy__telepathy-salut