Added a deprecation warning.
diff --git a/Lib/plat-mac/macfs.py b/Lib/plat-mac/macfs.py
index 68abc2c..8c26dd5 100644
--- a/Lib/plat-mac/macfs.py
+++ b/Lib/plat-mac/macfs.py
@@ -7,6 +7,9 @@
 import Carbon.File
 import warnings
 
+warnings.warn("macfs is deprecated, use Carbon.File, Carbon.Folder or EasyDialogs",
+              DeprecationWarning, stacklevel=2)
+              
 # First step: ensure we also emulate the MACFS module, which contained
 # all the constants