To get the output of cython_freeze to compile with both Python 2 and
Python 3, I copied the contents of Python-3.1.1/Modules/python.c, with
some slight modifications.  The main issue is that Python 3 uses
wchar_t, while Python 2 uses char.  It also appears that the
Py_FlushLine/PyErr_Clear is not needed in Python 3.

Related to #434: "main() function generated by --embed doesn't compile
in Py3"

Copy the fix for floating point exceptions on FreeBSD from Python's
Module/python.c.

The only reason I had a "rst" extension was so that GitHub would pick it
up.

--HG--
rename : Demos/freeze/README.rst => Demos/freeze/README.txt

Add an option to build a regular interpreter, calling Py_Main(), rather
than running the first module as __main__.

--HG--
rename : bin/cython_freeze.py => bin/cython_freeze

The files originally had README.rst in the top level and the examples in
the example directory, but now all are in Demos/freeze.