This reverts r63675 based on the discussion in this thread:
http://mail.python.org/pipermail/python-dev/2008-June/079988.html
Python 2.6 should stick with PyString_* in its codebase. The PyBytes_* names
in the spirit of 3.0 are available via a #define only. See the email thread.
diff --git a/Include/pythonrun.h b/Include/pythonrun.h
index 3fc70f5..c5635ba 100644
--- a/Include/pythonrun.h
+++ b/Include/pythonrun.h
@@ -136,7 +136,7 @@
PyAPI_FUNC(void) PyTuple_Fini(void);
PyAPI_FUNC(void) PyList_Fini(void);
PyAPI_FUNC(void) PySet_Fini(void);
-PyAPI_FUNC(void) PyBytes_Fini(void);
+PyAPI_FUNC(void) PyString_Fini(void);
PyAPI_FUNC(void) PyInt_Fini(void);
PyAPI_FUNC(void) PyFloat_Fini(void);
PyAPI_FUNC(void) PyOS_FiniInterrupts(void);