[Twisted-Python] Buildbot downtime

[Tom Prince]

This is a reminder that I am going to to take twisted's buildbot at 1600
UTC (just over an hour from now). While it is down, I'll ask people not
to commit to trunk. I'll send an email when it is back up.

While the buildbot is down, I will be testing a new version. Feel free
to poke around, and run builds, but be aware that any builds will be lost.

  Tom