Changes to ghc

Changes to ghc:
commit 73cab206e0f211b75cb6fd62ab9b6ca8ae0950f2
Author: Austin Seipp <austin@well-typed.com>
Date:   Mon Mar 24 06:07:27 2014 -0500

    relnotes: GND is not -XSafe compatible.

    Signed-off-by: Austin Seipp <austin@well-typed.com>