Changes to ghc testsuite

Changes to ghc:
commit 29db17fe02786a0af543e0f6de1d4ee4cca7e299
Author: Jan Stolarek <jan.stolarek@p.lodz.pl>
Date:   Thu Oct 24 15:27:39 2013 +0200

    Remove unnecessary check in CmmContFlowOpt

    Fixes #8456

Changes to testsuite:
commit 3ac7046a52d1d37e3cd3f09d556caabbb9b75716
Author: Jan Stolarek <jan.stolarek@p.lodz.pl>
Date:   Thu Oct 24 17:04:35 2013 +0200

    Adjust performance of T783 to #8456 fix