patch applied (cabal): Remove the need for a compat Data.Map module

[Duncan Coutts]

Thu Jul 10 08:46:00 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Remove the need for a compat Data.Map module
  Stop using Map.alter, use the same solution as the PackageIndex module.

    M ./Cabal.cabal -1
    R ./Distribution/Compat/Map.hs
    M ./Distribution/Simple/PackageSet.hs -5 +2

View patch online:
http://darcs.haskell.org/cabal/_darcs/patches/20080710154600-adfee-e405915f638b6105fb554b49858b58ec1c85ed2e.gz