Store-Sqlite branch: now merged!

[Alex Hudson]

Hey everyone,

So earlier I merged the store-sqlite branch onto trunk. It's a pretty
large patch, and is disk-format incompatible with the old trunk.
However, I've been using it a lot today and I think it's really worth
it. IMAP in particular has benefited a lot from the work on that branch;
stuff like running Tbird mail rules on large amounts of mail doesn't
cause bad things to happen any more :)

If you already have a bongo 0.3 or previous trunk and you want to
migrate, it's pretty easy. Compile up a new trunk (r940 or better), and
use the new bongo-storetool to connect to your existing Bongo and run a
store backup. You can then restore that to a new Bongo.

I'd be really grateful if people can try compiling this, running it and
testing it. I've subscribed mine to a few mailing lists, like LKML :),
and so far it seems fine. However, this is just the server portion of
Bongo: the web UI in Bongo does need work and is currently broken, and
that's the next target.

I'm going to keep the branch around for a little while, but there won't
be further commits to it.

Cheers,

Alex.