Version 3.27.20 (based on bleeding_edge revision r21679)

Fix invalid loop condition for Array.lastIndexOf() (Chromium issue 380512).

Add API support for passing a C++ function as a microtask callback.

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@21682 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Version 3.27.21 (based on bleeding_edge revision r21703)

Turn on harmony_collections for es_staging (issue 1622).

Do not make heap iterable eagerly (Chromium issue 379740).

Performance and stability improvements on all platforms.

git-svn-id: https://v8.googlecode.com/svn/trunk@21704 ce2b1a6d-e550-0410-aec6-3dcde31c8c00