[Xmonad] darcs patch: new layout algorithm for Mosaic. (and 6 more)

This is a bunch of modifications to Mosaic. It's not necesarily a net improvement, but it's where my development is at the moment (and is needed for Mosaic to compile at the moment). David Sun May 27 12:11:53 PDT 2007 David Roundy * new layout algorithm for Mosaic. Fri Jun 1 10:05:05 PDT 2007 David Roundy * start switching over to a Monte Carlo algorithm for Mosaic Sat Jun 9 06:14:56 PDT 2007 David Roundy * cut obsolete description of mosaic. Fri Jun 1 10:50:42 PDT 2007 David Roundy * improve changeMosaic. Fri Jun 1 11:31:47 PDT 2007 David Roundy * fix error in select. Fri Jun 1 11:32:40 PDT 2007 David Roundy * maximize rather than minimize the rating. Sun Jun 10 07:58:16 PDT 2007 David Roundy * update Mosaic for latest changes.