Revert backwards-incompatible const changes.
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index d353f1f..3aaf98e 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -7259,7 +7259,7 @@
 unicode_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 {
         PyObject *x = NULL;
-	static const char *kwlist[] = {"string", "encoding", "errors", 0};
+	static char *kwlist[] = {"string", "encoding", "errors", 0};
 	char *encoding = NULL;
 	char *errors = NULL;