[xmonad] darcs patch: fixes for PerWorkspace.hs, and tweaks to get Doc.hs to compile under 6.8.1

Tue Nov 20 12:33:07 EST 2007 Brent Yorgey <byorgey@gmail.com> * PerWorkspace.hs: various fixes and updates Tue Nov 20 12:29:47 EST 2007 Brent Yorgey <byorgey@gmail.com> * Doc.hs: remove modules from export list. Apparently GHC 6.8.1 issues a warning when a re-exported module does not itself export anything.