Changes to ghc testsuite

Changes to ghc:
commit a1b6932419a2d425b2a3b7672926a0f9c368f234
Author: Simon Peyton Jones <simonpj@microsoft.com>
Date:   Fri Nov 8 10:51:20 2013 +0000

    Make worker/wrapper robust to bogus unsafeCorece

    Fixes Trac #8037

Changes to testsuite:
commit 9441b7fbf952adf9a3a4402167ba40d8d2166d98
Author: Simon Peyton Jones <simonpj@microsoft.com>
Date:   Fri Nov 8 10:52:14 2013 +0000

    Test Trac #8037