Avoid overdeep recursion in regexp where a guarded expression with a minimum repetition count is inside another quantifier. (Chromium issue 129926)

Fixed missing write barrier in store field stub. (issues 2143, 1465, Chromium issue 129355)

Proxies: Fixed receiver for setters inherited from proxies. Proxies: Fixed ToStringArray function so that it does not reject some keys. (issue 1543)

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@11689 ce2b1a6d-e550-0410-aec6-3dcde31c8c00