darcs.net migration in progress

Hi,

I'm kicking off migrating darcs.net to a new machine now.

This includes:
 - The http://darcs.net website+wiki
 - The repositories hosted at http://darcs.net
 - The roundup tracker for bugs and patches

It *doesn't* include hub.darcs.net.

Please don't make any updates to roundup until I announce it's done -
I'll try to make it read-only to begin with if possible. The other items
(website+repos) are darcs repos anyway so it won't be a big deal to pull
across updates if anyone does make any.

Assuming all goes well the DNS should be switched over to the new
machine by late on Monday. It's possible that sorting out email
integration with roundup will take a bit longer than that.

Ganesh