Changes to ghc

Changes to ghc:
commit 5a576754d745171422d13cd1dba69dd874714cf1
Author: Austin Seipp <austin@well-typed.com>
Date:   Thu Feb 20 06:12:06 2014 -0600

    Add a test for d3af980 (#5682)

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