bin/102694: df(1) can forget to print the unit with -h

[Gleb Smirnoff]

Synopsis: df(1) can forget to print the unit with -h

Responsible-Changed-From-To: freebsd-bugs->pjd
Responsible-Changed-By: glebius
Responsible-Changed-When: Sat Oct 21 09:32:03 UTC 2006
Responsible-Changed-Why: 
Since Pawel has changed df(1) to use humanize_number(3) let him ponder
on this problem.

http://www.freebsd.org/cgi/query-pr.cgi?pr=102694