_PyObject_DebugDumpStats:  renamed to _PyObject_DebugMallocStats.
Added code to call this when PYMALLOC_DEBUG is enabled, and envar
PYTHONMALLOCSTATS is set, whenever a new arena is obtained and once
late in the Python shutdown process.
diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index f0727d3..0ca1f42 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -276,6 +276,11 @@
 
 	PyGrammar_RemoveAccelerators(&_PyParser_Grammar);
 
+#ifdef PYMALLOC_DEBUG
+	if (Py_GETENV("PYTHONMALLOCSTATS"))
+		_PyObject_DebugMallocStats();
+#endif
+
 	call_ll_exitfuncs();
 
 #ifdef Py_TRACE_REFS