patch applied (cabal): Convert from PackageIndex to PackageSet

[Ian Lynagh]

Sun Jul 20 12:49:24 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Convert from PackageIndex to PackageSet
  Turns out the feature to do case-insensitive lookups was only
  needed in cabal-install (and only in one little part) and
  elsewhere it causes problems. So use PackageSet instead.

    M ./Distribution/PackageDescription/Configuration.hs -6 +6
    M ./Distribution/Simple/Configure.hs -14 +14
    M ./Distribution/Simple/GHC.hs -4 +4
    M ./Distribution/Simple/Haddock.hs -2 +2
    M ./Distribution/Simple/JHC.hs -4 +4
    M ./Distribution/Simple/LocalBuildInfo.hs -2 +2
    M ./Distribution/Simple/PackageIndex.hs -152 +2

View patch online:
http://darcs.haskell.org/cabal/_darcs/patches/20080720194924-adfee-c1b240181125fcd67a4d09c176425cd15be691f1.gz