Fix PEP 293 related problems with --disable-unicode builds
reported by Michael Hudson in
http://mail.python.org/pipermail/python-dev/2002-November/030299.html
diff --git a/Python/codecs.c b/Python/codecs.c
index 1424bb5..9302a3d 100644
--- a/Python/codecs.c
+++ b/Python/codecs.c
@@ -486,6 +486,7 @@
 }
 
 
+#ifdef Py_USING_UNICODE
 PyObject *PyCodec_IgnoreErrors(PyObject *exc)
 {
     int end;
@@ -728,6 +729,7 @@
 	return NULL;
     }
 }
+#endif
 
 static PyObject *strict_errors(PyObject *self, PyObject *exc)
 {
@@ -735,6 +737,7 @@
 }
 
 
+#ifdef Py_USING_UNICODE
 static PyObject *ignore_errors(PyObject *self, PyObject *exc)
 {
     return PyCodec_IgnoreErrors(exc);
@@ -757,6 +760,7 @@
 {
     return PyCodec_BackslashReplaceErrors(exc);
 }
+#endif
 
 
 void _PyCodecRegistry_Init(void)
@@ -774,6 +778,7 @@
 		METH_O
 	    }
 	},
+#ifdef Py_USING_UNICODE
 	{
 	    "ignore",
 	    {
@@ -806,6 +811,7 @@
 		METH_O
 	    }
 	}
+#endif
     };
     if (_PyCodec_SearchPath == NULL)
 	_PyCodec_SearchPath = PyList_New(0);