Upgrade tools
Upgrade tools

    haddock         => 2.6.0
    alex            => 2.3.2
    cabal-install   => 0.8.0

    happy is unchanged.

darcs-hash:20100313210816-cba2c-29a55b8661bc4b7f3855054616f6097d801fcf1b.gz

ardumont/haskell-platform,erantapaa/haskell-platform,gbaz/haskell-platform,gbaz/haskell-platform,erantapaa/haskell-platform,erantapaa/haskell-platform,bgamari/haskell-platform,ardumont/haskell-platform,thomie/haskell-platform,bgamari/haskell-platform