Changes to ghc

Changes to ghc:
commit 2e3c6a53330de8ed9e1dcbc8ab43c9405a3a89be
Author: Krzysztof Gogolewski <krz.gogolewski@gmail.com>
Date:   Fri Nov 29 22:41:31 2013 +0100

    Update "stolen syntax" section (#8575)

    Thanks to aavogt