[Xmonad] darcs patch: add function and comment assisting use in resizing the...

Here's a change I expect to find helpful when living in a VNC client (since I'm far from my primary computer, and my laptop is very wimpy). Basically it allows me to define a keybinding that unilaterally changes the screen size, regardless of what X thinks. Slightly hokey, but helpful. David Tue Sep 4 17:24:29 EDT 2007 David Roundy * add function and comment assisting use in resizing the screen.