release of libxml2 2.6.28 patch from Dagfinn I. Mannsåker for idness of

* doc/* configure.in NEWS: release of libxml2 2.6.28
* valid.c: patch from Dagfinn I. Mannsåker for idness of name
  in HTML, c.f. bug #305885.
Daniel

svn path=/trunk/; revision=3638
diff --git a/doc/APIchunk13.html b/doc/APIchunk13.html
index 834cde1..c0be627 100644
--- a/doc/APIchunk13.html
+++ b/doc/APIchunk13.html
@@ -232,6 +232,7 @@
 <a href="html/libxml-xpathInternals.html#xmlXPathNotEqualValues">xmlXPathNotEqualValues</a><br />
 </dd><dt>deprecated</dt><dd><a href="html/libxml-xmlversion.html#LIBXML_LEGACY_ENABLED">LIBXML_LEGACY_ENABLED</a><br />
 <a href="html/libxml-HTMLparser.html#_htmlElemDesc">_htmlElemDesc</a><br />
+<a href="html/libxml-uri.html#_xmlURI">_xmlURI</a><br />
 <a href="html/libxml-HTMLparser.html#htmlAttrAllowed">htmlAttrAllowed</a><br />
 <a href="html/libxml-HTMLparser.html#htmlElementAllowedHere">htmlElementAllowedHere</a><br />
 <a href="html/libxml-HTMLparser.html#htmlElementStatusHere">htmlElementStatusHere</a><br />