fall back when an old test_support doesn't have various data and functions (closes #17533)
diff --git a/Misc/NEWS b/Misc/NEWS
index adf78de..4587309 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -24,6 +24,8 @@
 - Issue #17531: Fix tests that thought group and user ids were always the int
   type. Also, always allow -1 as a valid group and user id.
 
+- Issue #17533: Fix test_xpickle with older versions of Python 2.5.
+
 Documentation
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