Merge 3.2: Fix the import machinery if there is an error on sys.path or sys.meta_path find_module() now raises a RuntimeError, instead of ImportError, on an error on sys.path or sys.meta_path because load_package() and import_submodule() returns None and clear the exception if a ImportError occurred.

#include "Python.h"

#ifndef PLATFORM
#define PLATFORM "unknown"
#endif

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