Duplicate the decls for PySys_WriteStd{out,err} here so the VC++
compiler doesn't grumble. Greg Stein's suggestion.
diff --git a/Include/pgenheaders.h b/Include/pgenheaders.h
index 6b49782..ecfa89b 100644
--- a/Include/pgenheaders.h
+++ b/Include/pgenheaders.h
@@ -61,6 +61,15 @@
#include "pydebug.h"
+#ifdef HAVE_STDARG_PROTOTYPES
+void PySys_WriteStdout(const char *format, ...);
+void PySys_WriteStderr(const char *format, ...);
+#else
+/* Better to have no prototypes at all for varargs functions in this case */
+void PySys_WriteStdout();
+void PySys_WriteStderr();
+#endif
+
#define addarc _Py_addarc
#define addbit _Py_addbit
#define adddfa _Py_adddfa