Roughly prototype the kauth directory

Roughly prototype the kauth directory

A first pass at prototyping and warning reduction for the kauth
directory. kauth is plagued by the des key type problems, and
no attempt to remedy this has been made. Some other complex
warnings remain - it didn't seem worth the effort to do this
in too much detail, as it's dying soon.

Reviewed-on: http://gerrit.openafs.org/23
Verified-by: Jeffrey Altman <jaltman@openafs.org>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Reviewed-by: Derrick Brashear <shadow@dementia.org>