patch applied (cabal-install): Actually does compile with unix-1.0 that comes with ghc-6.6

[Duncan Coutts]

Sat Feb 21 07:46:05 PST 2009  Duncan Coutts <duncan at haskell.org>
  * Actually does compile with unix-1.0 that comes with ghc-6.6
  ghc-6.6.1 came with unix-2.1

    M ./cabal-install.cabal -1 +1

View patch online:
http://darcs.haskell.org/cabal-install/_darcs/patches/20090221154605-adfee-584b29529666b4b08d536946569733b877f917d7.gz