Add tbayly to THANKS

Signed-off-by: Andy Grover <agrover@redhat.com>
Fix check if so.udev_path is not set

ramdisks don't have a udev_path.

Signed-off-by: Andy Grover <agrover@redhat.com>
Allow tilde-expansion for file backstore filename

Signed-off-by: Andy Grover <agrover@redhat.com>
Update 'tag' doctext

Signed-off-by: Andy Grover <agrover@redhat.com>
Fix re-tagging

Make sure NodeACL (new or old) being changed isn't used as model.

Signed-off-by: Andy Grover <agrover@redhat.com>