update fssync-debug to handle the VOL_LOCKED flag

update fssync-debug to handle the VOL_LOCKED flag

Allow fssync-debug to dump the VOL_LOCKED flag, rather than the
current behavior of printing absolutely nothing when this flag
is asserted.  In addition, increase the flag buffer size since
it turns out we would truncate if all nine flags were asserted
at once.

Change-Id: I4d58f8c599dcc3b17f8cfd76e88dac12097207c1
Reviewed-on: http://gerrit.openafs.org/2971
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>