[jdev] MUC through IRC

[Philipp Hancke]

Norman Rasmussen wrote:
> - ejabberd-ircd: requires irc client, admin chooses muc server/component

one more (caution, advertisement follows):
- psyced: requires irc client, lets local ircers join local* rooms,
           and talk to remote xmpp people (using xmpp:user at host syntax**)
           and behaves like a more-or-less-compliant xmpp and muc server
           for remote jabberites.

Similar approach as ejabberd-ircd, but much more mature.

(*) reason for this restriction are conceptual differences between irc
     and jabber - room nicknames, join recognition, join procedure,
     spanning tree vs 'broadcast', ...
(**) rewriting those to short nicknames is possible, but requires manual
     configuration by the user.