Version 3.30.20 (based on bleeding_edge revision r24916)

Performance and stability improvements on all platforms.

git-svn-id: http://v8.googlecode.com/svn/trunk@24925 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Version 3.30.21 (based on 486433415b65d9e79dad68490b9c02e35a3760c0)

MIPS: Classes: Add basic support for properties (issue 3330).

Classes: Add more tests for prototype edge cases (Chromium issue 3655).

Classes: Add test for method prototype (issue 3330).

Get stack trace for uncaught exceptions/promise rejections from the simple stack when available.

Classes: Add basic support for properties (issue 3330).

Allow duplicate property names in classes (issue 3570).

Windows: use SystemTimeToTzSpecificLocalTime instead of localtime_s (Chromium issue 417640).

Performance and stability improvements on all platforms.

git-svn-id: http://v8.googlecode.com/svn/trunk@24982 ce2b1a6d-e550-0410-aec6-3dcde31c8c00