[Devel] more im/presence thoughts

[Juha Heinanen]

which is easier to do:

1) add presence/im server code to openser and xmpp gateway to xmpp world

2 gw ALL sip im/presence message to jabber2d and thus use it also as sip
  im/presence server

the advantage of (2) is that it would make openser environment also a
full blown xmpp server environment, i.e., we would have two eggs (sip
and xmpp) in our basket rather than just one (sip).  further, supporting
both sip and xmpp im/presence clients for the same AoR would seem to be
easier.

-- juha