more config(8) patches (was Re: patch to fix breakage caused by earlier config(8) patch)

[ibotty]

>     Don't go overboard!  But it's still a nice cleanup.

why not? i understand, that when many are working on a single point of code,
these cleanups can be disturbing, but with chris being the only person to
work on config(8), i doubt it would harm many people.

on the pro side, you have readable, good-structured code.

one of dragonfly's best choices (for me) so far, has been a tolerant
viewpoint about cosmetic changes (be it ansi, comments, other cleanup).

~ibotty