[Xmonad] darcs patch: implement Spencer's decoration suggestion. (and 1 more)

Hi all, Here's a couple of patches implementing Spencer's suggestion for dealing with window decorations. Other patches will be coming to XMonadContrib to actually make use of this (and demonstrate its sufficiency). I haven't actualy tested it yet with anything beyond the creation of decorations. But will appreciate feedback. David Sat Jun 9 18:22:37 PDT 2007 David Roundy * implement Spencer's decoration suggestion. Sat Jun 9 18:35:31 PDT 2007 David Roundy * send message when "windows" is called.