Ensure 'module removed' warning messages contain the word 'module' or 'package'.

This should fix the test_py3kwarn failure on OS X.  test_support.import_module
also requires this.
diff --git a/Mac/Modules/MacOS.c b/Mac/Modules/MacOS.c
index bef7f88..19deb44 100644
--- a/Mac/Modules/MacOS.c
+++ b/Mac/Modules/MacOS.c
@@ -695,7 +695,7 @@
 {
 	PyObject *m, *d;
 	
-	if (PyErr_WarnPy3k("In 3.x, MacOS is removed.", 1))
+	if (PyErr_WarnPy3k("In 3.x, the MacOS module is removed.", 1))
 		return;
 	
 	m = Py_InitModule("MacOS", MacOS_Methods);