Completely get rid of PyClass and PyInstance.
(classobject.[ch] aren't empty yet because they also define PyMethod.)
This breaks lots of stuff, notably cPickle. But it's a step in the right
direction. I'll clean it up later.
(Also a few unrelated changes, e.g. T_NONE to define a "struct member"
that is always None, and simplification of __hash__ -- these are unfinished.)
diff --git a/Include/classobject.h b/Include/classobject.h
index 8f8db7d..885c43e 100644
--- a/Include/classobject.h
+++ b/Include/classobject.h
@@ -1,5 +1,4 @@
-
-/* Class object interface */
+/* Former class object interface -- now only (un)bound methods are here  */
 
 /* Revealing some structures (not for general use) */
 
@@ -11,58 +10,22 @@
 
 typedef struct {
     PyObject_HEAD
-    PyObject	*cl_bases;	/* A tuple of class objects */
-    PyObject	*cl_dict;	/* A dictionary */
-    PyObject	*cl_name;	/* A string */
-    /* The following three are functions or NULL */
-    PyObject	*cl_getattr;
-    PyObject	*cl_setattr;
-    PyObject	*cl_delattr;
-} PyClassObject;
-
-typedef struct {
-    PyObject_HEAD
-    PyClassObject *in_class;	/* The class object */
-    PyObject	  *in_dict;	/* A dictionary */
-    PyObject	  *in_weakreflist; /* List of weak references */
-} PyInstanceObject;
-
-typedef struct {
-    PyObject_HEAD
     PyObject *im_func;   /* The callable object implementing the method */
     PyObject *im_self;   /* The instance it is bound to, or NULL */
     PyObject *im_class;  /* The class that asked for the method */
     PyObject *im_weakreflist; /* List of weak references */
 } PyMethodObject;
 
-PyAPI_DATA(PyTypeObject) PyClass_Type, PyInstance_Type, PyMethod_Type;
+PyAPI_DATA(PyTypeObject) PyMethod_Type;
 
-#define PyClass_Check(op) ((op)->ob_type == &PyClass_Type)
-#define PyInstance_Check(op) ((op)->ob_type == &PyInstance_Type)
 #define PyMethod_Check(op) ((op)->ob_type == &PyMethod_Type)
 
-PyAPI_FUNC(PyObject *) PyClass_New(PyObject *, PyObject *, PyObject *);
-PyAPI_FUNC(PyObject *) PyInstance_New(PyObject *, PyObject *,
-                                            PyObject *);
-PyAPI_FUNC(PyObject *) PyInstance_NewRaw(PyObject *, PyObject *);
 PyAPI_FUNC(PyObject *) PyMethod_New(PyObject *, PyObject *, PyObject *);
 
 PyAPI_FUNC(PyObject *) PyMethod_Function(PyObject *);
 PyAPI_FUNC(PyObject *) PyMethod_Self(PyObject *);
 PyAPI_FUNC(PyObject *) PyMethod_Class(PyObject *);
 
-/* Look up attribute with name (a string) on instance object pinst, using
- * only the instance and base class dicts.  If a descriptor is found in
- * a class dict, the descriptor is returned without calling it.
- * Returns NULL if nothing found, else a borrowed reference to the
- * value associated with name in the dict in which name was found.
- * The point of this routine is that it never calls arbitrary Python
- * code, so is always "safe":  all it does is dict lookups.  The function
- * can't fail, never sets an exception, and NULL is not an error (it just
- * means "not found").
- */
-PyAPI_FUNC(PyObject *) _PyInstance_Lookup(PyObject *pinst, PyObject *name);
-
 /* Macros for direct access to these values. Type checks are *not*
    done, so use with care. */
 #define PyMethod_GET_FUNCTION(meth) \
@@ -72,9 +35,6 @@
 #define PyMethod_GET_CLASS(meth) \
 	(((PyMethodObject *)meth) -> im_class)
 
-PyAPI_FUNC(int) PyClass_IsSubclass(PyObject *, PyObject *);
-
-
 #ifdef __cplusplus
 }
 #endif