Version 3.25.15 (based on bleeding_edge revision r20015)

Don't generate keyed store ICs for global proxies (Chromium issue 352983).

MIPS: Make invalid LHSs a parse-time (reference) error (Chromium issue 351658).

Make invalid LHSs a parse-time (reference) error (Chromium issue 351658).

Add Promises/A+ Compliance Test Suite (Chromium issue 347095).

Split Promise API into Promise/Resolver.

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@20016 ce2b1a6d-e550-0410-aec6-3dcde31c8c00