transcode, avifile and dvdrip

The transcode and the avifile lib haven't been updated for a year. But now it seems that they are back to live ... and break their dependencies, which are only a few. DVD-Rip is working with the new versions, when using the unstable tree. This is why it is in extra now. This combo works for me way better than the old packages. If you encounter problems go use the bugtracker.