Have cfmfile raise a DeprecationWarning as per PEP 4.

Lib/plat-mac/cfmfile.py

@@ -11,6 +11,9 @@ from Carbon import Res
 import os
 import sys
 
+import warnings
+warnings.warn("the cfmfile module is deprecated", DeprecationWarning, 2)
+
 DEBUG = 0
 
 error = "cfm.error"

Misc/NEWS

@@ -909,6 +909,8 @@ Windows
 Mac
 ---
 
+- cfmfile now raises a DeprecationWarning.
+
 - buildtools now raises a DeprecationWarning.
 
 - Removed the macfs module.  It had been deprecated since Python 2.5.  This