Add warnings to and deprecated all those Mac modules
diff --git a/Lib/plat-mac/icopen.py b/Lib/plat-mac/icopen.py
index eea6083..7b8e8f3 100644
--- a/Lib/plat-mac/icopen.py
+++ b/Lib/plat-mac/icopen.py
@@ -37,6 +37,9 @@
 effect.
 """
 
+from warnings import warnpy3k
+warnpy3k("In 3.x, the icopen module is removed.")
+
 import __builtin__
 
 _builtin_open = globals().get('_builtin_open', __builtin__.open)