- 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.
diff --git a/Lib/_LWPCookieJar.py b/Lib/_LWPCookieJar.py
index 2a4fa7b..6720958 100644
--- a/Lib/_LWPCookieJar.py
+++ b/Lib/_LWPCookieJar.py
@@ -37,8 +37,7 @@
     if cookie.comment: h.append(("comment", cookie.comment))
     if cookie.comment_url: h.append(("commenturl", cookie.comment_url))
 
-    keys = cookie._rest.keys()
-    keys.sort()
+    keys = sorted(cookie._rest.keys())
     for k in keys:
         h.append((k, str(cookie._rest[k])))