patch applied (cabal-install): Filter the configure flags based on the Cabal lib version

[Duncan Coutts]

Fri Jun  6 02:25:03 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Filter the configure flags based on the Cabal lib version
  Allows us to use cabal-install to build packages where we build the
  Setup.hs script using an older version of the Cabal library.
  This is important for packages that claim to need an older version
  and it's also pretty useful for testing.

    M ./Hackage/Install.hs -7 +8
    M ./Hackage/Setup.hs -2 +9
    M ./Hackage/SetupWrapper.hs -4 +4
    M ./Main.hs -2 +3

View patch online:
http://darcs.haskell.org/cabal-install/_darcs/patches/20080606092503-adfee-574f9126f95b6ab3b5349f8b16293324cdf76475.gz