Weekly builds for 0-21-fixes and trunk

There seems to be some confusion about the state of the weekly builds.

Although it was stated that no weekly builds would happen for Ubuntu Gutsy (7.10), we've decided to provide them for a few more weeks.

Current 'trunk' branch is undergoing a major transition, there will be no weekly trunk builds until it has become more stable again. We'll post a short notice here once we resume the weekly trunk builds.