[Xmonad] darcs patch: keep focus stack.

Hi all, Here's an amend-recorded version of my focus stack patch, which fixes recent conflicts. I understand there's some debate (presumably on IRC?) as to what is the best way to deal with the focus issues, and figure that having working code to consider could come in handy in the discussion. It's also a significant usability improvement in the meantime... David Thu May 10 06:16:37 PDT 2007 David Roundy * keep focus stack.