libcxx-test: Add new expected failures and remove some that now pass
libcxx-test: Add new expected failures and remove some that now pass

Most of the new failures are covered in bug 3962 and a few are new
since the libcxx 3.5 merge.

Also remove the XFAILS that are passing on my local machine. Note that
there are acutally more passing on the bots, but for now, keep them
until we investigate the difference

R=jfb@chromium.org
BUG=green FYI bots
BUG= https://code.google.com/p/nativeclient/issues/detail?id=3962

Review URL: https://codereview.chromium.org/616823003

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@13810 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client,sbc100/native_client