patch applied (ghc): Simplify ghc-pkg's Cabal dependencies

[Ian Lynagh]

Sun Jul  4 11:41:55 PDT 2010  Ian Lynagh <igloo at earth.li>
  * Simplify ghc-pkg's Cabal dependencies
  We no longer support building with a compiler that doesn't come with
  base 4.

    M ./utils/ghc-pkg/ghc-pkg.cabal -21 +4

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=ghc;a=darcs_commitdiff;h=20100704184155-3fd76-cd29b62653517df924d8162605e6ece098377ae9.gz