patch applied (cabal-install): Use a more specific type in one place in SetupWrapper

[Duncan Coutts]

Tue Aug 12 09:11:53 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Use a more specific type in one place in SetupWrapper
  It doesn't need access to the whole Packagedescription,
  it only needs the the PackageIdentifier.

    M ./Distribution/Client/SetupWrapper.hs -3 +4

View patch online:
http://darcs.haskell.org/cabal-install/_darcs/patches/20080812161153-adfee-091ecf42a0882abbd0c78c49201e5d92c642f475.gz