patch applied (cabal-install): Cope with intra-package deps when constructing install plans

[Duncan Coutts]

Sat Mar 20 14:53:31 PDT 2010  Duncan Coutts <duncan at haskell.org>
  * Cope with intra-package deps when constructing install plans

    M ./Distribution/Client/Dependency/TopDown.hs -1 +3
    M ./Distribution/Client/InstallPlan.hs -2 +3
    A ./Distribution/Client/PackageUtils.hs
    M ./cabal-install.cabal +1