WIP: ATA to CAM integration

[bf]

Alexander:

I was happy to see that your recent P4 commit
messages, hoping for good things to come, but
your announcement surpasses my expectations.
Thanks to you and Scott for undertaking this
effort.  Will there be a trickle of commits
to the main source tree, or are you going to
hold off until the project is finished?  If the
latter, when do you think that you will be done?

Regards,
             b.