Releasing 0.84

[Jeremy Lawler]

> I don't have it running on any real scale, so I don't really feel my usage
> tests it adequately enough for me to be confident in it.
>
>

I've been running a slightly patched r773 it in a production
environment for a few months without problems.  Couple hundred users,
the only problems were hardware related.
I looked at the diff between now and 773, and it doesn't look to
substantial, so here's a vote for .84