Various patches and bug fixes, and XInclude progresses:

- nanohttp.[ch]: applied Wayne Davison patches to access
  the WWW-Authorization header.
- parser.c: Closed Bug#30847: Problems when switching encoding
  in short files by applying Simon Berg's patch.
- valid.c: fixed a validation problem
- hash.c parser.h parserInternals.h testHTML.c testSAX.c tree.h
  xmlerror.h xmlmemory.h xmlversion.h.in: applied a DLL patch from
  Wayne Davison
- xpointer.[ch]: added first version of xmlXPtrBuildNodeList()
  need to be extended to non full nodes selections.
- xinclude.c: starts to work decently
Daniel

parser.c

@@ -8171,6 +8171,15 @@ xmlParseChunk(xmlParserCtxtPtr ctxt, const char *chunk, int size,
 	if ((terminate) || (ctxt->input->buf->buffer->use > 80))
 	    xmlParseTryOrFinish(ctxt, terminate);
     } else if (ctxt->instate != XML_PARSER_EOF)
+      if ((ctxt->input != NULL) && ctxt->input->buf != NULL) {
+      xmlParserInputBufferPtr in = ctxt->input->buf;
+      int nbchars = xmlCharEncInFunc(in->encoder, in->buffer, in->raw);
+      if (nbchars < 0) {
+          xmlGenericError(xmlGenericErrorContext,
+                  "xmlParseChunk: encoder error\n");
+          return(XML_ERR_INVALID_ENCODING);
+      }
+      }
         xmlParseTryOrFinish(ctxt, terminate);
     if (terminate) {
 	/*