Deprecate CL, CL_old, and cl for 3.0.
diff --git a/Lib/plat-irix5/CL_old.py b/Lib/plat-irix5/CL_old.py
index 967b497..892f86c 100755
--- a/Lib/plat-irix5/CL_old.py
+++ b/Lib/plat-irix5/CL_old.py
@@ -8,6 +8,10 @@
 #
 # originalFormat parameter values
 #
+from warnings import warnpy3k
+warnpy3k("the CL_old module has been removed in Python 3.0", stacklevel=2)
+del warnpy3k
+
 MAX_NUMBER_OF_ORIGINAL_FORMATS = 32
 
 # Audio