Enable Reiser4 for Edgy

Reiser4 is a fairly radical departure from Reiser3 and other filesystems. Benchmarks show some very average desktop performance in some use cases, but excellent performance in many areas. On-the-fly compression can increase bandwidth (and capacity).

There equivalent of user_xattr is a system where metadata is stored as sub-files, so a file is actually a folder and a file. There is a naming scheme for accessing this data. This could be a barrier or an opprtunity to drench Ubuntu with rich meta-data and make desktop usability take off.