Making use of set_rcvar.

[Pawel Jakub Dawidek]

Any objections?

	http://people.freebsd.org/~pjd/patches/set_rcvar.patch

This patch only changes scripts where set_rcvar can be used with no
arguments.

-- 
Pawel Jakub Dawidek                       http://www.wheelsystems.com
FreeBSD committer                         http://www.FreeBSD.org
Am I Evil? Yes, I Am!                     http://yomoli.com
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