advance warning: darcs.net migration this weekend

Hi,

Just a heads-up: darcs.net will be migrated to a new machine this
weekend. That includes the following things:

 - 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.

I'll send an update when I get started, at which point the items being
migrated should be treated as read-only (I'll try to make them actually
read-only but no promises).

Assuming all goes well the DNS should be switched over to the new
machine by late on Monday.

Ganesh