update windows build to Python 3.7

include/internal/pygetopt.h

@@ -0,0 +1,19 @@
+#ifndef Py_INTERNAL_PYGETOPT_H
+#define Py_INTERNAL_PYGETOPT_H
+
+extern int _PyOS_opterr;
+extern int _PyOS_optind;
+extern wchar_t *_PyOS_optarg;
+
+extern void _PyOS_ResetGetOpt(void);
+
+typedef struct {
+    const wchar_t *name;
+    int has_arg;
+    int val;
+} _PyOS_LongOption;
+
+extern int _PyOS_GetOpt(int argc, wchar_t **argv, wchar_t *optstring,
+                        const _PyOS_LongOption *longopts, int *longindex);
+
+#endif /* !Py_INTERNAL_PYGETOPT_H */