Added comments before recently added/assigned slots in the type object, so the backward compatibility issues will be easier to understand. I only added comments indicating additions and assignments back to Python 2.0.

/* Minimal main program -- everything is loaded from the library */

#include "Python.h"

extern DL_EXPORT(int) Py_Main(int, char **);

int
main(int argc, char **argv)
{
	return Py_Main(argc, argv);
}