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

[Aidan Kehoe]

 Ar an t-aonú lá is triochad de mí na Nollaig, scríobh 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)?

Previously this function was never called on built-in macros, because
built-in-symbol-file (in core, called via #'symbol-file in
#'find-function-noselect) failed when passed one. Since my change of today,
http://hg.debian.org//hg/xemacs/xemacs/?cs=69e6352406f0 it can receive
built-in macros, and needs this change to avoid erroring on them. I’m not
sure whether that’s a feature or a bugfix following your description; I
choose to be pessimistic and call it a bugfix.

-- 
¿Dónde estará ahora mi sobrino Yoghurtu Nghé, que tuvo que huir
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