Changes to ghc

Changes to ghc:
commit 4bc3c8265f988f4456664f502164f52466aab67d
Author: Joachim Breitner <mail@joachim-breitner.de>
Date:   Sat Mar 22 11:53:03 2014 +0100

    Mark test for #8831 as known-broken

    to keep validate working.