Windows: unix modes represented in octal

Windows: unix modes represented in octal

Since unix mode bits are represented in octal in most cases
make sure we log them that way.

LICENSE MIT

Change-Id: Ia8106c7bbd3230380c7efa437b6eb0a90398bda3
Reviewed-on: http://gerrit.openafs.org/2652
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
(cherry picked from commit a97282bf76730fd05c2365aa1c58ce96174efd37)
Reviewed-on: http://gerrit.openafs.org/2699
Tested-by: Derrick Brashear <shadow@dementia.org>