[Xmonad] darcs patch: Dzen.hs: add module header. (and 3 more)

Mon Jun 18 16:29:15 CEST 2007 joachim.fasting@gmail.com * Dzen.hs: add module header. Mon Jun 18 16:30:59 CEST 2007 joachim.fasting@gmail.com * LayoutHints.hs: add module header. Mon Jun 18 16:32:34 CEST 2007 joachim.fasting@gmail.com * LayoutHints.hs: add usage thingie for Haddock. Mon Jun 18 21:36:26 CEST 2007 joachim.fasting@gmail.com * Accordion.hs: add module header and usage instructions.