patch applied (cabal-install): Follow directory layout of HackageDB data also when calculating URLs to download from, not just the local paths.

[bjorn at bringert.net]

Sun May 20 15:16:11 PDT 2007  bjorn at bringert.net
  * Follow directory layout of HackageDB data also when calculating URLs to download from, not just the local paths.

    M ./src/Network/Hackage/CabalInstall/Fetch.hs -1 +2
    M ./src/Network/Hackage/CabalInstall/Update.hs -1 +3