patch applied (packages/Cabal): Import Data.Tree rather than defining it locally

[Ian Lynagh]

Mon Mar 10 09:43:43 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Import Data.Tree rather than defining it locally
  Since we've dropped ghc-6.2 compatibility we can now use Data.Tree directly.

    M ./Distribution/ParseUtils.hs -13 +2

View patch online:
http://darcs.haskell.org/packages/Cabal/_darcs/patches/20080310164343-adfee-8c22ba36fd54df676a8c57c0c3112608c43ab7ae.gz