Deprecate CL, CL_old, and cl for 3.0.
diff --git a/Lib/plat-irix6/CL.py b/Lib/plat-irix6/CL.py
index 23259c5..15130e4 100644
--- a/Lib/plat-irix6/CL.py
+++ b/Lib/plat-irix6/CL.py
@@ -1,5 +1,9 @@
 # Backward compatible module CL.
 # All relevant symbols are now defined in the module cl.
+from warnings import warnpy3k
+warnpy3k("the CL module has been removed in Python 3.0", stacklevel=2)
+del warnpy3k
+
 try:
     from cl import *
 except ImportError: