Made Array.prototype.pop throw if the last element is not configurable.

Fixed HObjectAccess for loads from migrating prototypes. (Chromium issue 305309)

Enabled preaging of code objects when --optimize-for-size. (Chromium issue 280984)

Exposed v8::Function::GetDisplayName to public API. (Chromium issue 17356)

Performance and stability improvements on all platforms.

git-svn-id: http://v8.googlecode.com/svn/trunk@17354 ce2b1a6d-e550-0410-aec6-3dcde31c8c00