Changes to ghc

Changes to ghc:
commit a05f8dd15b51db7e71ab783182548f1af6dd2ceb
Author: Mateusz Kowalczyk <fuuzetsu@fuuzetsu.co.uk>
Date:   Sat May 3 15:43:00 2014 +0200

    Update Haddock submodule ref. Fixes `cabal test'.