[PreViking-devel] Session Management

[<za...@gr...>]

I know this was meant to go into a later version of 0.5, but I thought it
too important not to be done.  I have committed into HEAD, session
management functions to handle creation of sessions, addition and removal
of channels to/from session, and destruction of sessions.  This now allows
sessions to be started without incoming call.  I have changed the releavnt
places to use the new session management functions, and so it is now
integrated in.

Beware, it hasn't been tested yet.

What I haven't implemented yet is the pvTransferChannelToSession function
that would transfer a channel from one session to another with a
precondition that the sessions must be of the same service.  This is
needed for things like the callcentre service, and would also be required
for services like a conference call service where the participants ring in
to become part of the conference.

Hopefully I can get that done tomorrow before departing to France.

Zaheer