gjournal feature-complete beta version

gjournal is a GEOM journaling class (layer) that provides data journaling 
and COW-like facilities to any disk-like devices GEOM knows about. It's 
sponsored by Google's Summer of Code project.

I'm announcing availability of beta version (not for production use) that 
needs more testing. It's available for download at:
http://ivoras.sharanet.org/gjournal-beta.tgz

Read the README file before using!

More information about the project can be found at:
http://wikitest.freebsd.org/moin.cgi/gjournal

Any feedback is welcome! :)

-- 
Every sufficiently advanced magic is indistinguishable from technology
    - Arthur C Anticlarke