updated the docs and prepared a new release 2.6.4 Daniel

* configure.in NEWS doc/*: updated the docs and prepared a new
  release 2.6.4
Daniel
diff --git a/doc/APIchunk20.html b/doc/APIchunk20.html
index d7718bb..18ecb35 100644
--- a/doc/APIchunk20.html
+++ b/doc/APIchunk20.html
@@ -195,7 +195,8 @@
 <a href="html/libxml-xpathInternals.html#xmlXPathBooleanFunction">xmlXPathBooleanFunction</a><br />
 <a href="html/libxml-xpathInternals.html#xmlXPathFloorFunction">xmlXPathFloorFunction</a><br />
 <a href="html/libxml-xpathInternals.html#xmlXPathStringFunction">xmlXPathStringFunction</a><br />
-</dd><dt>possible</dt><dd><a href="html/libxml-parserInternals.html#xmlCreateEntityParserCtxt">xmlCreateEntityParserCtxt</a><br />
+</dd><dt>possible</dt><dd><a href="html/libxml-schemasInternals.html#_xmlSchemaType">_xmlSchemaType</a><br />
+<a href="html/libxml-parserInternals.html#xmlCreateEntityParserCtxt">xmlCreateEntityParserCtxt</a><br />
 <a href="html/libxml-parserInternals.html#xmlParseDefaultDecl">xmlParseDefaultDecl</a><br />
 <a href="html/libxml-parserInternals.html#xmlParseExternalID">xmlParseExternalID</a><br />
 <a href="html/libxml-tree.html#xmlReconciliateNs">xmlReconciliateNs</a><br />