[dev] [dwm] RC-style paths

Hi,

I've attached a patch that allows dwm to exec rc-style paths, e.g.
"local/foo". This is of limited usefulness, but it's handy if you're
running rc and want to bind other directories into /bin instead of
messing with PATH. Any input would be appreciated.

-Matt Stickney

-- 
On Mr. Dibbler's excellent sausages: "And then you bit into them, and
learned once again that Cut-me-own-Throat Dibbler could find a use for
bits of an animal that the animal didn't know it had got. Dibbler had
worked out that with enough fried onions and mustard people would eat
*anything*."
 — (Terry Pratchett, Moving Pictures)