Get rid of dict.has_key(). Boy this has a lot of repercussions!
Not all code has been fixed yet; this is just a checkpoint...
The C API still has PyDict_HasKey() and _HasKeyString(); not sure
if I want to change those just yet.
diff --git a/Lib/test/test_multibytecodec_support.py b/Lib/test/test_multibytecodec_support.py
index bec32de..50ed481 100644
--- a/Lib/test/test_multibytecodec_support.py
+++ b/Lib/test/test_multibytecodec_support.py
@@ -297,7 +297,7 @@
                 continue
 
             unich = unichrs(data[1])
-            if ord(unich) == 0xfffd or urt_wa.has_key(unich):
+            if ord(unich) == 0xfffd or unich in urt_wa:
                 continue
             urt_wa[unich] = csetch