Changes to ghc

Changes to ghc:
commit 71e4950a3067bd0eb8b8dae7883740dfc925eb3e
Author: Krzysztof Gogolewski <krz.gogolewski@gmail.com>
Date:   Sun Nov 17 13:56:24 2013 +0100

    Minor change to error message wording

    One flag is deprecated, other removed