patch applied (cabal-install): Simplify install --only implementation

[Duncan Coutts]

Mon Apr 14 07:34:57 PDT 2008  Duncan Coutts <duncan at haskell.org>
  * Simplify install --only implementation
  The install --only doesn't do any planning or build
  reporting so make it completely separate so we do
  not have to make up fake build plans or results.

    M ./Hackage/Install.hs -17 +6
    M ./Main.hs +3

View patch online:
http://darcs.haskell.org/cabal-install/_darcs/patches/20080414143457-adfee-fd3c1e0d2233ce13e96d2da21ddb8f0a996ede7f.gz