Added support for optional explanation parameter to the \versionadded macro. Refactored do_cmd_versionadded() and do_cmd_versionchanged() to do most of the work in a helper function, with the do_cmd_*() wrappers just supplying a portion of the replacement text.

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

#include "Python.h"

extern "C"
DL_EXPORT(int) Py_Main( int argc, char *argv[] );

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