Log Message:
add py-cxfreeze-4.2, a (sort of) compiler which makes a standalone
executable of a Python script, from Helge Muehlmeier per pkgsrc-wip

This pkg abuses Python distutils in a non-portable way, so I've
added a hack which relinks the startup code behind setuptools'
back. This is easier than patching the setup.py script into doing trt.