Time to work on helping the Gnome Doc project, first step is reintegrating
the SGML DocBook parser in libxml2 distrib:
- DOCBparser.c DOCBparser.h testDocbook.c configure.in Makefile.am
  xmlversion.h.in: started (re)integrating the DocBook SGML parser.
- SAX.[ch]: cleanup and updates for DocBook
- debugXML.c parser.h tree.[ch] valid.c xpath.c: small macro or
  ex SGML identifier changes
- valid.c: removed a static unused function.
Daniel
diff --git a/debugXML.c b/debugXML.c
index d20f207..f7b10d5 100644
--- a/debugXML.c
+++ b/debugXML.c
@@ -899,8 +899,8 @@
 	    break;
 	case XML_DOCUMENT_NODE:
 	case XML_HTML_DOCUMENT_NODE:
-#ifdef LIBXML_SGML_ENABLED
-	case XML_SGML_DOCUMENT_NODE:
+#ifdef LIBXML_DOCB_ENABLED
+	case XML_DOCB_DOCUMENT_NODE:
 #endif
 	    list = ((xmlDocPtr) node)->children;
 	    break;