patch applied (cabal-branches/cabal-1.8): MERGED: Get the correct value of $topdir on Windows with GHC 6.12.1

Thu Feb 4 05:29:38 PST 2010 Ian Lynagh <igloo@earth.li> * MERGED: Get the correct value of $topdir on Windows with GHC 6.12.1 Ian Lynagh <igloo@earth.li>**20091230204613 This doesn't full merge the patch, as partly it changed an interface in order to refactor. M ./Distribution/Simple/GHC.hs -2 +7 View patch online: http://darcs.haskell.org/cabal-branches/cabal-1.8/_darcs/patches/20100204132...