Remove unused dependencies
The version of base specified isn't available on my system, so when I
updated it (and a few other libraries when they also errored) it now
seems to have built fine.
So it must be fine!
Fallback to direct initiate when no Jingle Message Initation support
Check for a message initiation supporting resource, if none then send to the
most available resource.
TODO: Should only send to most available resource that supports jingle rtp audio.
This code is garbage and will have to be rewritten.
When paired with the Asterisk setup, inbound calls to sip:firstname.lastname@example.org
end up as working Jingle calls (tested only with Conversations) to the target
Declining the call, hanging up, and errors from calling bad JIDs all are handled.