[xmonad] darcs patch: dynamicbars-partial-cleanup

1 patch for repository http://code.haskell.org/XMonadContrib: Fri Jul 5 00:45:10 EDT 2013 Ben Boeckel * dynamicbars-partial-cleanup Add functions to allow cleaning up only screens which disappear. This works better where killing the statusbar for a specific screen is possible. The old way is still relevant for setups which do not have such a method (e.g., safeSpawn xmobar/spawnPipe xmonadpropwrite).