PyModule_AddStringConstant(): Make this static since it isn't used

                               elsewhere in 1.5.2.

Modules/pyexpat.c

 #include "Python.h"
+#ifdef HAVE_EXPAT_H
+#include "expat.h"
+#else
 #include "xmlparse.h"
+#endif
 
 enum HandlerTypes {
     StartElement,
@@ -877,7 +881,7 @@ PyModule_AddObject(PyObject *m, char *name, PyObject *o)
         return 0;
 }
 
-int 
+static int 
 PyModule_AddStringConstant(PyObject *m, char *name, char *value)
 {
 	return PyModule_AddObject(m, name, PyString_FromString(value));