Added tests for requirements imposed on the built-in objects of the ECMAScript Internationalization API Specification by the introduction of chapter 15 of the ECMAScript Language Specification.
- Removed some old tests that were redundant with the new tests.
- Added testBuiltInObject.js as standard include for all console tests in test262.py – see related bug 574.

Running packager.py on Mac unfortunately also changes some line terminators in generated files (bug 444), so lots of additional files in this commit.

Adding more coverage for 10.4.3 based on feedback in bug https://bugs.ecmascript.org/show_bug.cgi?id=333

Adding more tests to cover undefined being non-writable (see https://bugs.ecmascript.org/show_bug.cgi?id=223 )

Removing RegEx test-case related to https://bugs.ecmascript.org/show_bug.cgi?id=326 until open issue is resolved.