[XML-SIG] One-Line Enhancement to catalog.py

[Martin v. Loewis]

> In order to use the pyXML catalog stuff with SGML-specific catalogs, I
> had to enable the processing of SGMLDECL entries. This required adding
> this line to catalog.py:
> 
>                          "SGMLDECL": ("s")}

It appears that just adding this line is an incomplete change. At a
minimum, the application should be informed using, say,
handle_sgmldecl. Can you come up with a patch that does that?

If so, please submit the patch as a unified (-u) or context (-c) diff.
Posting the diff to the list is fine, although submitting it to
sourceforge is preferred.

Thanks,
Martin