relax SVN archive

This was done with the python 2.x to 3.x script with the commands:
2to3 -w -f exec relax .

The change is in preparation for Python 3.0, and relax still works with Python versions 2.4, 2.5,
and 2.6.

The changes include:
1) The call to type() has been replaced with isinstance().
2) "while 1" has been replaced with "while True".
3) list sort methods x.sort() have been replaced with a call to sorted(x).

Booleans are instances of int, so the user function argument unit tests will be a massive mess!