Add mechanism to postpone interrupts selectively.

BUG=v8:3408
LOG=N
R=yurys@chromium.org

Review URL: https://codereview.chromium.org/359723005

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22073 ce2b1a6d-e550-0410-aec6-3dcde31c8c00