new build 010508

Finally, a new Pooka build. The main feature that people will notice is
the search button on the folder view. The rest of the UI for searches is
lacking, but the basic functionality is there. I also fixed several bugs
with running IMAP in disconnected mode.

I haven't tested this build as much as I'd tested earlier ones, so it may
have a few more bugs. Hopefully it'll be ok, though.