patch applied (cabal-install): Use the mergeBy from the Utils module

Sun May 4 13:17:42 PDT 2008 Duncan Coutts * Use the mergeBy from the Utils module M ./Hackage/List.hs -17 +7 View patch online: http://darcs.haskell.org/cabal-install/_darcs/patches/20080504201742-adfee-9...