patch applied (cabal): allow Cabal to use base-4

[Simon Marlow]

Wed Aug  6 06:05:12 PDT 2008  Simon Marlow <marlowsd at gmail.com>
  * allow Cabal to use base-4

    M ./Cabal.cabal -1 +1

View patch online:
http://darcs.haskell.org/cabal/_darcs/patches/20080806130512-12142-d7e77cfa0c5727751a7ba1dac21c0eaaf1226794.gz