Changes to ghc

Changes to ghc:
commit 386e874e365e310214b701e6f3cb74b4f75348f4
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Sat Apr 19 20:20:26 2014 +0200

    Update Cabal source-repository entries (re #8545)

    This adapts the source-repository entries to match the new situation of
    base.git, ghc-prim.git, integer-gmp.git, integer-simple.git, and
    template-haskell.git being folded into ghc.git

    Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>