[IronPython] Avalon tutorial

[Luis M. Gonzalez]

> Changing the import statement in the winforms.py to be:
> from IronPython.Runtime import CallTarget0 will get you going on the 
> winforms front.

Still not working...

>>> from IronPython.Runtime import CallTarget0
>>> from System.Windows.Forms import *
Traceback (most recent call last):
  File , line 0, in input##1
ImportError: cannot import Windows from System