patch applied (packages/hpc): Require Cabal version >= 1.6

[Ian Lynagh]

Wed Jan 21 17:13:08 PST 2009  Ian Lynagh <igloo at earth.li>
  * Require Cabal version >= 1.6

    M ./hpc.cabal -1 +1

View patch online:
http://darcs.haskell.org/packages/hpc/_darcs/patches/20090122011308-3fd76-d6256ead52effa6f37019321dc6ef48c4a961bf1.gz