Turn on fp-restore part of eh_floating_point_*_test for PNaCl.
Turn on fp-restore part of eh_floating_point_*_test for PNaCl.

Add some extra test cases that require full double precision,
not just simple "1.0" constants.

BUG=https://code.google.com/p/nativeclient/issues/detail?id=3689
BUG=https://code.google.com/p/nativeclient/issues/detail?id=3672
R=dschuff@chromium.org

Review URL: https://codereview.chromium.org/23874025

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@12197 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

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