- PEP 3106: dict.iterkeys(), .iteritems(), .itervalues() are now gone;

and .keys(), .items(), .values() return dict views.

The dict views aren't fully functional yet; in particular, they can't
be compared to sets yet.  but they are useful as "iterator wells".

There are still 27 failing unit tests; I expect that many of these
have fairly trivial fixes, but there are so many, I could use help.

Lib/_threading_local.py

@@ -28,8 +28,7 @@ local to a thread. If we access the data in a different thread:
 
   >>> log = []
   >>> def f():
-  ...     items = mydata.__dict__.items()
-  ...     items.sort()
+  ...     items = sorted(mydata.__dict__.items())
   ...     log.append(items)
   ...     mydata.number = 11
   ...     log.append(mydata.number)