Fix old urllib/urllib2/urlparse usage.
diff --git a/Lib/http/cookiejar.py b/Lib/http/cookiejar.py
index e9b83ea..afd5f20 100644
--- a/Lib/http/cookiejar.py
+++ b/Lib/http/cookiejar.py
@@ -1305,7 +1305,7 @@
         return attrs
 
     def add_cookie_header(self, request):
-        """Add correct Cookie: header to request (urllib2.Request object).
+        """Add correct Cookie: header to request (urllib.request.Request object).
 
         The Cookie2 header is also added unless policy.hide_cookie2 is true.