deps: backport 23f2736a from v8 upstream

Original text:

    Fix corner case in x64 compare stubs.

    BUG=v8:2416

    Review URL: https://codereview.chromium.org/11413087

fix #7528
constants: export O_NONBLOCK

Signed-off-by: Fedor Indutny <fedor@indutny.com>
Merge remote-tracking branch 'upstream/v0.10' into v0.10