X.A.PhysicalScreens cleaning and allow cycling
X.A.PhysicalScreens cleaning and allow cycling

Ignore-this: 3a9a3554cda29f976df646b38b56e8e7
Remove redundant import to supress warning, did some refactoring to use xmonad internal things to find screens instead of using X11-stuff. Also added ability to cycle between screens in physical order.

darcs-hash:20100308113704-8978f-d312f0f413ff2d6fc1b1fe64dfac098e298d59f5

jthornber/XMonadContrib,jthornber/XMonadContrib