Silence DeprecationWarnings from uses of has_key and <> in plat-mac.
diff --git a/Lib/plat-mac/aepack.py b/Lib/plat-mac/aepack.py
index 6021283..bb2a37f 100644
--- a/Lib/plat-mac/aepack.py
+++ b/Lib/plat-mac/aepack.py
@@ -132,7 +132,7 @@
     """Unpack an AE descriptor to a python object"""
     t = desc.type
 
-    if unpacker_coercions.has_key(t):
+    if t in unpacker_coercions:
         desc = desc.AECoerceDesc(unpacker_coercions[t])
         t = desc.type # This is a guess by Jack....