patch applied (packages/Cabal): cabal-install uses defaultMain if it can' t find Setup.lhs

[Simon Marlow]

Sun Jan 29 21:07:10 PST 2006  ijones at syntaxpolice.org
  * cabal-install uses defaultMain if it can't find Setup.lhs

    M ./Distribution/Simple.hs -2 +5
    M ./cabal-install/CabalInstall.hs -12 +26
    M ./cabal-install/cabal-install.cabal -1 +1