patch applied (packages/Cabal): base-1.0 does not have Data.Map.alter so use insertWith instead

[Ian Lynagh]

Thu Jun 12 08:43:09 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * base-1.0 does not have Data.Map.alter so use insertWith instead

    M ./Distribution/Simple/PackageIndex.hs -3 +1

View patch online:
http://darcs.haskell.org/packages/Cabal/_darcs/patches/20080612154309-adfee-5f17cd5a4c897c636ae152d48637c9bbcf5c8cc3.gz