Deprecate the pure module for 3.0.
diff --git a/Modules/puremodule.c b/Modules/puremodule.c
index 95f4bde..ede63ab 100644
--- a/Modules/puremodule.c
+++ b/Modules/puremodule.c
@@ -951,6 +951,10 @@
 {
 	PyObject *m, *d;
 
+	if (PyErr_WarnPy3k("the pure module has been removed in "
+	                   "Python 3.0", 2) < 0)
+	    return;	
+
 	m = Py_InitModule("pure", pure_methods);
 	if (m == NULL)
     		return;