Add warnings to and deprecated all those Mac modules
diff --git a/Mac/Modules/MacOS.c b/Mac/Modules/MacOS.c
index 3fe6e0d..becb4b1 100644
--- a/Mac/Modules/MacOS.c
+++ b/Mac/Modules/MacOS.c
@@ -603,6 +603,9 @@
 {
 	PyObject *m, *d;
 	
+	if (PyErr_WarnPy3k("In 3.x, MacOS is removed.", 1))
+		return;
+	
 	m = Py_InitModule("MacOS", MacOS_Methods);
 	d = PyModule_GetDict(m);