fix mkfs --verbose and man page

mkfs did not actually accept the long form --verbose option.
Also the man page seemed to indicate that version/verbose/help
options were passed to the filesystem specific utility when this
is not the case.

Signed-off-by: Phillip Susi <psusi@ubuntu.com>
mount: remove obsolete and confusing statement from mount.8

The wording was confusing and suidperl has gone the way
of the dodo, and really didn't need mentionting in mount.8.

Signed-off-by: Phillip Susi <psusi@ubuntu.com>
renice: correct max priority in renice man page

The man page stated that the PRIO_MAX is 20.  While this
is correct, the header definition is wrong and the max
value is actually 19.

[kzak@redhat.com: - remove PRIO_MAX from man page, kernel syscalls
                    use hardcoded numbers for the priority limits]

Signed-off-by: Phillip Susi <psusi@ubuntu.com>
Signed-off-by: Karel Zak <kzak@redhat.com>