Several changes in one:

(1) dictionaries/mappings now have attributes values() and items() as
well as keys(); at the C level, use the new function mappinggetnext()
to iterate over a dictionary.

(2) "class C(): ..." is now illegal; you must write "class C: ...".

(3) Class objects now know their own name (finally!); and minor
improvements to the way how classes, functions and methods are
represented as strings.

(4) Added an "access" statement and semantics.  (This is still
experimental -- as long as you don't use the keyword 'access' nothing
should be changed.)
diff --git a/Include/mappingobject.h b/Include/mappingobject.h
index 83c3380..fa7402d 100644
--- a/Include/mappingobject.h
+++ b/Include/mappingobject.h
@@ -22,22 +22,19 @@
 
 ******************************************************************/
 
-/*
-Mapping object type -- mapping from object to object.
-These functions set errno for errors.  Functions mappingremove() and
-mappinginsert() return nonzero for errors, getmappingsize() returns -1,
-the others NULL.  A successful call to mappinginsert() calls INCREF()
-for the inserted item.
-*/
+/* Mapping object type -- mapping from hashable object to object */
 
 extern typeobject Mappingtype;
 
 #define is_mappingobject(op) ((op)->ob_type == &Mappingtype)
 
 extern object *newmappingobject PROTO((void));
-extern object *mappinglookup PROTO((object *dp, object *key));
-extern int mappinginsert PROTO((object *dp, object *key, object *item));
-extern int mappingremove PROTO((object *dp, object *key));
-extern int getmappingsize PROTO((object *dp));
-extern object *getmappingkey PROTO((object *dp, int i));
-extern object *getmappingkeys PROTO((object *dp));
+extern object *mappinglookup PROTO((object *mp, object *key));
+extern int mappinginsert PROTO((object *mp, object *key, object *item));
+extern int mappingremove PROTO((object *mp, object *key));
+extern void mappingclear PROTO((object *mp));
+extern int mappinggetnext
+	PROTO((object *mp, int *pos, object **key, object **value));
+extern object *getmappingkeys PROTO((object *mp));
+extern object *getmappingvalues PROTO((object *mp));
+extern object *getmappingitems PROTO((object *mp));