Revert "Enable C++11 tests on windows."

This reverts commit 23383 because XP bots time out.

TBR=svenpanne@chromium.org
BUG=400033
LOG=n

Review URL: https://codereview.chromium.org/497413004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23385 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
[turbofan] Add backend support for load/store float32 values.

This is the bare minimum required to support typed arrays. Support for
working with float32 values will be added based on this.

TEST=compiler-unittests,cctest
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/500343002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23386 ce2b1a6d-e550-0410-aec6-3dcde31c8c00