Release of libxml2-2.9.1

* configure.in: bumped version
* doc/*: updated the symbols file and regenerated
diff --git a/doc/APIchunk13.html b/doc/APIchunk13.html
index c5d3e6a..b1f069d 100644
--- a/doc/APIchunk13.html
+++ b/doc/APIchunk13.html
@@ -242,6 +242,7 @@
 <a href="html/libxml-parserInternals.html#xmlCheckLanguageID">xmlCheckLanguageID</a><br />
 <a href="html/libxml-entities.html#xmlCreateEntitiesTable">xmlCreateEntitiesTable</a><br />
 <a href="html/libxml-parserInternals.html#xmlDecodeEntities">xmlDecodeEntities</a><br />
+<a href="html/libxml-dict.html#xmlInitializeDict">xmlInitializeDict</a><br />
 <a href="html/libxml-tree.html#xmlNodeDump">xmlNodeDump</a><br />
 <a href="html/libxml-parserInternals.html#xmlParserHandleReference">xmlParserHandleReference</a><br />
 <a href="html/libxml-parser.html#xmlParserInputRead">xmlParserInputRead</a><br />