[Xmonad] darcs patch: implement Spencer's decoration suggestion. (and 3 more)

Hi all, Here's a complete set of patches to enable my tabbed layout (which this time I really am about to send). 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. Sun Jun 10 08:35:53 PDT 2007 David Roundy * accept unmodified clicks. I believe this restores the previous behavior where clicking on an unfocussed window brings it into focus (e.g. when switching workspaces, so your mouse is over an unfocussed window). It also is necesary for tabbed workspaces to function properly. Sun Jun 10 08:38:36 PDT 2007 David Roundy * a few modifications to event-sending to make Tabbed layout work.