builder instability over the past few days

[Jeremy Katz]

The builders for Extras have been a little bit up and down the past few
days.  The backlog of builds is cleared out now and hopefully everything
completed correctly.

I've tried to catch the builds that failed due to just build machine
silliness (eg, the NFS mount for the Fedora repository seems to come up
late on the ppc box, but not the hammers).  If any of your builds failed
and it looks like it's just due to the repository not being available,
you can requeue it with
  plague-client requeue <jobid>

As usual, if anyone notices problems, let us know.

Jeremy