ManageDocks: when there are struts on opposing edges, the right/bottom strut
ManageDocks: when there are struts on opposing edges, the right/bottom strut

was ignored.  TODO: quickchecks

darcs-hash:20071210021030-a5988-652b63b2819da15c435f7411bc8bc60d679a25a0

yzhou61/xmonad-contrib,yzhou61/xmonad-contrib,yzhou61/xmonad-contrib