Added support for debugger inspection of locals in optimized frames (issue 1140).

Fixed SConstruct to pass correct defines to samples/preparser when building with library=shared.

Made date parser handle ES5 Date Time Strings correctly (issue 1498).

Fixed a bug in Object.defineProperty on the arguments object.

Performance improvetments on all platforms.


git-svn-id: http://v8.googlecode.com/svn/trunk@8528 ce2b1a6d-e550-0410-aec6-3dcde31c8c00