Changes to ghc

Changes to ghc:
commit 89c83d66d1cb9d5b2f7b07ca7d886a505adf45fa
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Wed Jan 15 09:30:00 2014 +0100

    Update to `terminfo-0.4.0.0`/`haskeline-0.7.1.2`

    These new versions get rid of AMP warnings

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