darcs patch: add Data.Set.notMember and Data.Map.notMember

[Johannes Waldmann]

> If "not" is so easy and simple, why do we have both break and span ;)

OK, drop break. I mean, ( not . take ) break. Or something like that.

"In anything at all, perfection is finally attained, not when there is
no longer anything to add, but when there is no longer anything to take
away..."    Antoine de Saint-Exupery, Wind, Sand and Stars
-- 
-- Johannes Waldmann -- Tel/Fax (0341) 3076 6479/80 --
---- http://www.imn.htwk-leipzig.de/~waldmann/ -------