Fixed setting the readonly flag on the prototype property using the API call FunctionTemplate::SetPrototypeAttributes (issue 1539).

Changed the tools/test.py script to use d8 instead of shell for testing.

Fixed crash in ToBooleanStub when GC happens during invocation.

Enabled automatic unboxing of double arrays.

Performance improvements on all platforms.


git-svn-id: http://v8.googlecode.com/svn/trunk@8751 ce2b1a6d-e550-0410-aec6-3dcde31c8c00