preparing release of 2.4.30 fixups to the api builder, gives enum values,

* configure.in: preparing release of 2.4.30
* doc/apibuild.py doc/libxml2-api.xml: fixups to the api builder,
  gives enum values, fix functype return type, put back fields in
  structs
* doc/*: updated the docs rebuilt
Daniel
diff --git a/doc/xmlio.html b/doc/xmlio.html
index 3a2bb83..7010213 100644
--- a/doc/xmlio.html
+++ b/doc/xmlio.html
@@ -253,6 +253,7 @@
 
 
 
+
 } </pre>
   </li>
   <li>And then use it to save the document: