Add tracing for functions processed by code flushing.

R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/16773002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15064 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Disable --harmony -> --harmony-generators implication

A GC-related bug has started showing up after r15060 that unfortunately
I haven't been able to reproduce.  Disable generators by default for the
Canary push.

R=danno@chromium.org
BUG=

Review URL: https://codereview.chromium.org/16638011

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15065 ce2b1a6d-e550-0410-aec6-3dcde31c8c00