IronLanguages/main — pull request #74 by slide (2012-06-20 14:27:50+00:00)
Title: Partial fix for 32862

- added overloads to certain methods to allow null as a default parameter which more closely mimics CPython's behavior
- added return of 'default' values to some functions that matches CPython behavior.
- this fix improves the test_unicodedata.py passing rate as well.