[COMMIT PACKAGES] Accept built-in macros in #'find-func

[Stephen J. Turnbull]

Aidan Kehoe writes:
 > 
 > APPROVE COMMIT
 > 
 > NOTE: This patch has been committed.
 > 
 > xemacs-packages/xemacs-devel/ChangeLog addition:
 > 
 > 2007-12-30  Aidan Kehoe  <kehoea at parhasard.net>
 > 
 > 	* find-func.el (find-function-C-source):
 > 	Accept built-in macros in this function. 

Is this a new feature (previously it gracefully said "that's not a
function"), or a bugfix (previously it errored on the cons)?