patch applied (packages/Cabal): Add PackageSet.topologicalOrder and reverseTopologicalOrder

[Ian Lynagh]

Sun Jul 20 15:37:31 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Add PackageSet.topologicalOrder and reverseTopologicalOrder
  with type :: PackageFixedDeps pkg => PackageSet pkg -> [pkg]

    M ./Distribution/Simple/PackageSet.hs +15

View patch online:
http://darcs.haskell.org/packages/Cabal/_darcs/patches/20080720223731-adfee-e51cad76c061b84feb49df914d29787eaa23ada8.gz