Add __reversed__ to Enum.  Minor code reorg (moved __members__ to be in alpha order).
diff --git a/Lib/test/test_enum.py b/Lib/test/test_enum.py
index 018e3fd..1308003 100644
--- a/Lib/test/test_enum.py
+++ b/Lib/test/test_enum.py
@@ -477,6 +477,13 @@
                 [Season.SUMMER, Season.WINTER, Season.AUTUMN, Season.SPRING],
                 )
 
+    def test_reversed_iteration_order(self):
+        self.assertEqual(
+                list(reversed(self.Season)),
+                [self.Season.WINTER, self.Season.AUTUMN, self.Season.SUMMER,
+                 self.Season.SPRING]
+                )
+
     def test_programatic_function_string(self):
         SummerMonth = Enum('SummerMonth', 'june july august')
         lst = list(SummerMonth)