Add unix socket command to get a list of connected clients

[gavin-norman-sociomantic]

Outputting the clients' remote address and name (for neo clients) would be useful.

[gavin-norman-sociomantic]

An extended idea would be to output a list of clients listening to each channel. This is significantly more complicated, though.

[mathias-lang-sociomantic]

An extended idea would be to output a list of clients listening to each channel.

But it's actually what prompted the feature request. Outputing the client's address can currently be done via netstat, and the name is trivial for us to find most of the time. The channels being listened to is the real deal.

[gavin-norman-sociomantic]

Ok, both ideas noted. The per-channels thing is significantly complicated, though, unfortunately.