Roman number module gets setup.py tool

Written for Roman class for python by Vernon Cole on 2010-08-11

Installation of the Roman Number python class module is now eased by having a distutils based setup.py file included. The module name has been changed to "romanclass" in order to avoid conflict with a previously published "roman.py".
  Since setup.py will automatically convert the module to Python 3 syntax if needed, the former test "__main__" code has been converted to a .test() method -- so in Python 3 you can do "pythonclass.test()" to get the test printout.
The module has been tested using CPython 2.6, 2.7, Python 3.1, 3.2a1, and IronPython 2.6 and 2.7a1.
[Note: distutils is broken on IronPython -- you will have to copy the module to site-packages yourself, for now.]

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