_Py_stat() and _Py_fopen(): avoid PyUnicode_AsWideCharString() on Windows On Windows, Py_UNICODE is wchar_t, so we can avoid the expensive Py_UNICODE* => wchar_t* conversion.

#include "Python.h"

#ifndef PLATFORM
#define PLATFORM "unknown"
#endif

const char *
Py_GetPlatform(void)
{
	return PLATFORM;
}