patch applied (packages/Cabal): Add and export simplifyDependency

[Ian Lynagh]

Sun May 31 12:23:32 PDT 2009  Duncan Coutts <duncan at haskell.org>
  * Add and export simplifyDependency
  Just uses simplifyVersionRange on the version range in the dep

    M ./Distribution/Package.hs -1 +10

View patch online:
http://darcs.haskell.org/packages/Cabal/_darcs/patches/20090531192332-adfee-33cb2b87b282fbba350d1559057dec5dc7a58561.gz