Mark the new run_float_rounding_mode_test as broken on Valgrind.
Mark the new run_float_rounding_mode_test as broken on Valgrind.

Valgrind does not support changing rounding modes:
https://bugs.kde.org/show_bug.cgi?id=136779

BUG=http://code.google.com/p/nativeclient/issues/detail?id=3491
R=nfullagar@chromium.org

Review URL: https://codereview.chromium.org/18293013

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@11721 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client