patch applied (cabal-install): Move package substring searching into the Index module and use it in List

[Duncan Coutts]

Thu Jan 17 12:04:39 PST 2008  Duncan Coutts <duncan at haskell.org>
  * Move package substring searching into the Index module and use it in List
  Not much faster but rather cleaner.

    M ./Hackage/Index.hs -2 +14
    M ./Hackage/List.hs -30 +23
    M ./Hackage/Utils.hs -1 +8