fix byte ordering in check_sysid

fix byte ordering in check_sysid

Several uuid fields as well as the ip addreses in the sysid file are in
network byte order.  Fix the check_sysid utility to decode these fields
properly.  In addition, print the server uuid in the common string
format used to display uuids, instead of by individual uuid fields.

Change-Id: I9688e9117490d0ef0eb6dd5af417222482322e0c
Reviewed-on: http://gerrit.openafs.org/11603
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Daria Brashear <shadow@your-file-system.com>