Add warnings to and deprecated all those Mac modules
diff --git a/Doc/library/macos.rst b/Doc/library/macos.rst
index 543f868..832dacb 100644
--- a/Doc/library/macos.rst
+++ b/Doc/library/macos.rst
@@ -5,12 +5,17 @@
.. module:: MacOS
:platform: Mac
:synopsis: Access to Mac OS-specific interpreter features.
+ :deprecated:
This module provides access to MacOS specific functionality in the Python
interpreter, such as how the interpreter eventloop functions and the like. Use
with care.
+.. warning::
+
+ This module is removed in 3.0.
+
Note the capitalization of the module name; this is a historical artifact.