Add warnings to and deprecated all those Mac modules
diff --git a/Lib/plat-mac/bundlebuilder.py b/Lib/plat-mac/bundlebuilder.py
index 266b845..46c17df 100755
--- a/Lib/plat-mac/bundlebuilder.py
+++ b/Lib/plat-mac/bundlebuilder.py
@@ -28,6 +28,9 @@
 __all__ = ["BundleBuilder", "BundleBuilderError", "AppBuilder", "buildapp"]
 
 
+from warnings import warnpy3k
+warnpy3k("In 3.x, the bundlebuilder module is removed.")
+
 import sys
 import os, errno, shutil
 import imp, marshal