preparing 2.4.16 updated and rebuilt the docs, rebuilt the API and web

* configure.in include/libxml/xmlwin32version.h: preparing 2.4.16
* doc/* python/libxml2class.txt: updated and rebuilt the docs,
  rebuilt the API and web site
* xpath.c: fixed #71978 portability bugs
Daniel
diff --git a/doc/APIchunk20.html b/doc/APIchunk20.html
index 4070104..537329b 100644
--- a/doc/APIchunk20.html
+++ b/doc/APIchunk20.html
@@ -184,6 +184,7 @@
 </dd>
 <dt>unlinked</dt>
 <dd>
+<a href="html/libxml-tree.html#XMLADDCHILD">xmlAddChild</a>
 <a href="html/libxml-tree.html#XMLADDNEXTSIBLING">xmlAddNextSibling</a>
 <a href="html/libxml-tree.html#XMLADDPREVSIBLING">xmlAddPrevSibling</a>
 <a href="html/libxml-tree.html#XMLADDSIBLING">xmlAddSibling</a>
@@ -395,6 +396,7 @@
 <a href="html/libxml-valid.html#XMLADDNOTATIONDECL">xmlAddNotationDecl</a>
 <a href="html/libxml-valid.html#XMLADDREF">xmlAddRef</a>
 <a href="html/libxml-debugxml.html#XMLSHELLVALIDATE">xmlShellValidate</a>
+<a href="html/libxml-valid.html#XMLVALIDCTXTNORMALIZEATTRIBUTEVALUE">xmlValidCtxtNormalizeAttributeValue</a>
 <a href="html/libxml-valid.html#XMLVALIDNORMALIZEATTRIBUTEVALUE">xmlValidNormalizeAttributeValue</a>
 <a href="html/libxml-valid.html#XMLVALIDATEATTRIBUTEDECL">xmlValidateAttributeDecl</a>
 <a href="html/libxml-valid.html#XMLVALIDATEDOCUMENT">xmlValidateDocument</a>
@@ -447,6 +449,7 @@
 <dd>
 <a href="html/libxml-tree.html#XMLSETCOMPRESSMODE">xmlSetCompressMode</a>
 <a href="html/libxml-tree.html#XMLSETDOCCOMPRESSMODE">xmlSetDocCompressMode</a>
+<a href="html/libxml-valid.html#XMLVALIDCTXTNORMALIZEATTRIBUTEVALUE">xmlValidCtxtNormalizeAttributeValue</a>
 <a href="html/libxml-valid.html#XMLVALIDNORMALIZEATTRIBUTEVALUE">xmlValidNormalizeAttributeValue</a>
 </dd>
 <dt>varags</dt>