fixed a weird error where validity context whould not show up if warnings

* valid.c: fixed a weird error where validity context whould not
  show up if warnings were disabled pointed out by Bob Stayton
* xmlIO.c doc/generator.py: cleanup and fix to regenerate the docs
* doc//* testapi.c: rebuilt the docs
Daniel
diff --git a/doc/APIchunk13.html b/doc/APIchunk13.html
index af82134..1c9e865 100644
--- a/doc/APIchunk13.html
+++ b/doc/APIchunk13.html
@@ -589,6 +589,7 @@
 <a href="html/libxml-debugXML.html#xmlShellCat">xmlShellCat</a><br />
 <a href="html/libxml-debugXML.html#xmlShellDir">xmlShellDir</a><br />
 </dd><dt>duplicate</dt><dd><a href="html/libxml-uri.html#xmlCanonicPath">xmlCanonicPath</a><br />
+<a href="html/libxml-uri.html#xmlPathToURI">xmlPathToURI</a><br />
 </dd><dt>duplicated</dt><dd><a href="html/libxml-relaxng.html#xmlRelaxNGNewDocParserCtxt">xmlRelaxNGNewDocParserCtxt</a><br />
 <a href="html/libxml-xpathInternals.html#xmlXPathNodeSetFreeNs">xmlXPathNodeSetFreeNs</a><br />
 </dd><dt>duplicates</dt><dd><a href="html/libxml-xmlschemastypes.html#xmlSchemaCopyValue">xmlSchemaCopyValue</a><br />