use TpBaseChannel for Salut's channels (other than ContactList)
Submitted by Simon McVittie
Assigned to Telepathy bugs list
telepathy-glib has had TpBaseChannel since 0.11.14. It'd be good to use it in Salut.
However, there's no point in using it for ContactList channels - we should replace those with TpBaseContactList instead.
Version: git master