This adds support to the stack guard to trigger a full deoptimization of
all optimized code when the GC kicks into high promotion mode. Global
pretenuring decisions in optimized code can then be based on the high
promotion mode.

R=ulan@chromium.org

Review URL: https://codereview.chromium.org/14173007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@14243 ce2b1a6d-e550-0410-aec6-3dcde31c8c00