Merge branch 'auth-code-flow-log' into dev

Author: rayluo

oauth2cli/authcode.py

@@ -77,6 +77,9 @@ def _send_full_response(self, body, is_ok=True):
         self.end_headers()
         self.wfile.write(body.encode("utf-8"))
 
+    def log_message(self, format, *args):
+        logger.debug(format, *args)  # To override the default log-to-stderr behavior
+
 
 class _AuthCodeHttpServer(HTTPServer):
     def handle_timeout(self):