process parallel checks in the same way as fsck, since fsck supports
pass numbers other than 0, 1 or 2. Without this, quotacheck would
ignore file systems with pass numbers > 2.
The -l (maxrun) option is now deprecated and can be tuned with pass
numbers in /etc/fstab if needed.
negative are now ignored by the quota system and that extremely
large ids may make quotacheck run for a very long time.
Also mention that "options QUOTA" is required for the kernel
to provide quota support.
and an unknown uid/gid is found in the file system. This is useful
if you wind up with a file in your file system that has a uid
that is extremely large, since quotacheck will wind up running
a very very long time due to it not handling large gaps in uids
very well (this is a problem that should be addressed some day).
Update the man page to reflect that fact the the -v flag now prints
some additional diagnostic messages.
