Better jabber account prediction

[kchen@MIT.EDU]

When logged into multiple Jabber accounts and sending a Jabber message, barnowl currently attempts to guess which account to send from, presumably by using the account with a matching domain.

It would be nice if barnowl did some more detailed prediction, doing such as (in order):

• Using an account with the destination user on the roster and with presence confirmed
• Same as above, but without presence confirmed
• Domain matching

This came up for me because I'm logged into @mit.edu, @livejournal.com, and @gmail.com, and I have several @gmail.com users on my @mit.edu roster, but not on my @gmail.com one.

There are a few users I have on multiple rosters. In that case, I think I might want to typically use a "default" account (@mit.edu) rather than domain matching, but making this configurable would be a bonus.