[glom] Update the DTD, adding a trans_set.

[Murray Cumming <murrayc src gnome org>]

commit da867bee82d483e8295bfdd4303cd9e94d357586
Author: Murray Cumming <murrayc murrayc com>
Date:   Sun Jan 15 21:45:55 2012 +0100

    Update the DTD, adding a trans_set.

 glom/glom_document.dtd |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/glom/glom_document.dtd b/glom/glom_document.dtd
index 459f59a..c9201ca 100644
--- a/glom/glom_document.dtd
+++ b/glom/glom_document.dtd
@@ -331,7 +331,7 @@ TODO: Should we specify the presence of child text nodes in the ELEMENT somehow?
 
 <!-- data_layout_button is a button on the layout. -->
 
-    <!ELEMENT data_layout_button (script?, formatting?)>
+    <!ELEMENT data_layout_button (script?, trans_set?, formatting?)>
     <!ATTLIST data_layout_button
         title CDATA #REQUIRED
         sequence CDATA #IMPLIED