http://buildbot.scummvm.org/ (Times out sometimes!)
It builds a trunkshot for every platform every 24 hours. They make scummVM for a really big range of plattform as it can be seen on the downloads site: http://www.scummvm.org/downloads/
My suggestion is, to make one for the trunk of WZ. This would help other people that want to help, having problems compiling the source. One headshot to google found the site, that develops the buildbot:
http://buildbot.net/trac
This would bring back the nightly builds automatically for all of the platforms at once. I don't think, that it needs to be maintained to much, as it runs fully automatic after setting it up once.
AND it's open source!
Whatcha think?

