patch applied (packages/Cabal): Simplify configure code by relying on ghc >= 6.4

[Ian Lynagh]

Fri Feb 15 01:26:28 PST 2008  Duncan Coutts <duncan at haskell.org>
  * Simplify configure code by relying on ghc >= 6.4
  We changed to require ghc >= 6.4 a while ago, this is just a simplification
  that was missed at the time.

    M ./Distribution/Simple/Configure.hs -8 +4

View patch online:
http://darcs.haskell.org/packages/Cabal/_darcs/patches/20080215092628-adfee-a387197a93a3cd68dbb56ef039e2d0bbd290d9a0.gz