diff --git a/Include/code.h b/Include/code.h
index 9e6cb56..a4509e3 100644
--- a/Include/code.h
+++ b/Include/code.h
@@ -41,17 +41,17 @@
 #define CO_NOFREE       0x0040
 
 #if 0
-/* This is no longer used.  Stopped defining in 2.5, do not re-use. */
+/* These are no longer used. */
 #define CO_GENERATOR_ALLOWED    0x1000
-#endif
 #define CO_FUTURE_DIVISION    	0x2000
 #define CO_FUTURE_ABSIMPORT	0x4000 /* absolute import by default */
 #define CO_FUTURE_WITH_STATEMENT  0x8000
+#endif
 
 /* This should be defined if a future statement modifies the syntax.
    For example, when a keyword is added.
 */
-#define PY_PARSER_REQUIRES_FUTURE_KEYWORD
+/* #define PY_PARSER_REQUIRES_FUTURE_KEYWORD */
 
 #define CO_MAXBLOCKS 20 /* Max static block nesting within a function */
 
diff --git a/Include/parsetok.h b/Include/parsetok.h
index 0f87e81..2b4ce1e 100644
--- a/Include/parsetok.h
+++ b/Include/parsetok.h
@@ -23,7 +23,9 @@
 
 #define PyPARSE_DONT_IMPLY_DEDENT	0x0002
 
+#if 0
 #define PyPARSE_WITH_IS_KEYWORD		0x0003
+#endif
 
 PyAPI_FUNC(node *) PyParser_ParseString(const char *, grammar *, int,
                                               perrdetail *);
diff --git a/Include/patchlevel.h b/Include/patchlevel.h
index 2904fb6..56cf762 100644
--- a/Include/patchlevel.h
+++ b/Include/patchlevel.h
@@ -1,9 +1,5 @@
 
-/* Newfangled version identification scheme.
-
-   This scheme was added in Python 1.5.2b2; before that time, only PATCHLEVEL
-   was available.  To test for presence of the scheme, test for
-   defined(PY_MAJOR_VERSION).
+/* Python version identification scheme.
 
    When the major or minor version changes, the VERSION variable in
    configure.in must also be changed.
@@ -19,14 +15,14 @@
 					/* Higher for patch releases */
 
 /* Version parsed out into numeric values */
-#define PY_MAJOR_VERSION	2
-#define PY_MINOR_VERSION	5
+#define PY_MAJOR_VERSION	0
+#define PY_MINOR_VERSION	0
 #define PY_MICRO_VERSION	0
 #define PY_RELEASE_LEVEL	PY_RELEASE_LEVEL_ALPHA
 #define PY_RELEASE_SERIAL	0
 
 /* Version as a string */
-#define PY_VERSION		"2.5a0"
+#define PY_VERSION		"3.0x"
 
 /* Subversion Revision number of this file (not of the repository) */
 #define PY_PATCHLEVEL_REVISION  "$Revision$"
diff --git a/Include/pyerrors.h b/Include/pyerrors.h
index 1fe2e45..0e7718c 100644
--- a/Include/pyerrors.h
+++ b/Include/pyerrors.h
@@ -28,25 +28,18 @@
 
 /* */
 
-#define PyExceptionClass_Check(x)					\
-	(PyClass_Check((x))						\
-	 || (PyType_Check((x)) && PyType_IsSubtype(			\
-		     (PyTypeObject*)(x), (PyTypeObject*)PyExc_BaseException)))
+#define PyExceptionClass_Check(x) \
+	    (PyType_Check((x)) && PyType_IsSubtype(			\
+		     (PyTypeObject*)(x), (PyTypeObject*)PyExc_BaseException))
 
 
-#define PyExceptionInstance_Check(x)			\
-	(PyInstance_Check((x)) ||			\
-	 (PyType_IsSubtype((x)->ob_type, (PyTypeObject*)PyExc_BaseException)))
+#define PyExceptionInstance_Check(x) \
+	 (PyType_IsSubtype((x)->ob_type, (PyTypeObject*)PyExc_BaseException))
 
-#define PyExceptionClass_Name(x)				   \
-	(PyClass_Check((x))					   \
-	 ? PyString_AS_STRING(((PyClassObject*)(x))->cl_name)	   \
-	 : (char *)(((PyTypeObject*)(x))->tp_name))
+#define PyExceptionClass_Name(x) \
+	 ((char *)(((PyTypeObject*)(x))->tp_name))
 
-#define PyExceptionInstance_Class(x)					\
-	((PyInstance_Check((x))						\
-	  ? (PyObject*)((PyInstanceObject*)(x))->in_class		\
-	  : (PyObject*)((x)->ob_type)))
+#define PyExceptionInstance_Class(x) ((PyObject*)((x)->ob_type))
 
 	
 /* Predefined exceptions */
diff --git a/Include/pythonrun.h b/Include/pythonrun.h
index 1ecb3d7..52623ba 100644
--- a/Include/pythonrun.h
+++ b/Include/pythonrun.h
@@ -7,9 +7,8 @@
 extern "C" {
 #endif
 
-#define PyCF_MASK (CO_FUTURE_DIVISION | CO_FUTURE_ABSIMPORT | \
-                   CO_FUTURE_WITH_STATEMENT)
-#define PyCF_MASK_OBSOLETE (CO_NESTED)
+#define PyCF_MASK 0
+#define PyCF_MASK_OBSOLETE 0
 #define PyCF_SOURCE_IS_UTF8  0x0100
 #define PyCF_DONT_IMPLY_DEDENT 0x0200
 #define PyCF_ONLY_AST 0x0400