fixed an erroneous validation bug when PE refs occurs in external parsed

* parser.c: fixed an erroneous validation bug when PE refs
  occurs in external parsed entities referenced from the
  internals subset
* test/valid/index.xml test/valid/dtds/nitf-2-5.dtd
  test/valid/dtds/NewsMLv1.0.dtd result/valid/index.xml*:
  added the associated testcase, it's a nice one.
* HTMLparser.c: generate the DTD node as HTML still ...
* HTMLtree.c: fixed errors in Set/GetMetaEncoding
Daniel

test/valid/index.xml

@@ -0,0 +1,111 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!DOCTYPE NewsML PUBLIC "urn:newsml:iptc.org:20001006:NewsMLv1.0:1" "dtds/NewsMLv1.0.dtd" [
+  <!ENTITY % nitf SYSTEM "dtds/nitf-2-5.dtd">
+  %nitf;
+]>
+<NewsML>
+  <Catalog Href="http://www.afp.com/dtd/AFPCatalog.xml"/>
+  <NewsEnvelope>
+    <DateAndTime>20011022T154508Z</DateAndTime>
+  </NewsEnvelope>
+  <NewsItem>
+    <Identification>
+      <NewsIdentifier>
+        <ProviderId>afp.com</ProviderId>
+        <DateId>20011022</DateId>
+        <NewsItemId>mmd--deutsch--journal--spo</NewsItemId>
+        <RevisionId PreviousRevision="0" Update="N">1</RevisionId>
+        <PublicIdentifier>urn:NewsML:afp.com:20011022:mmd--deutsch--journal--spo:1</PublicIdentifier>
+      </NewsIdentifier>
+      <NameLabel>HINTERGRUND</NameLabel>
+    </Identification>
+    <NewsManagement>
+      <NewsItemType FormalName="News"/>
+      <FirstCreated>20011022T154508Z</FirstCreated>
+      <ThisRevisionCreated>20011022T154508Z</ThisRevisionCreated>
+      <Status FormalName="Usable"/>
+    </NewsManagement>
+    <NewsComponent>
+      <AdministrativeMetadata>
+        <Provider>
+          <Party FormalName="AFP"/>
+        </Provider>
+      </AdministrativeMetadata>
+      <DescriptiveMetadata>
+        <Language FormalName="de"/> 
+      </DescriptiveMetadata>
+      <NewsComponent>
+        <NewsLines>
+          <HeadLine>Berliner SPD f<>hrt Gespr<70>che mit FDP und Gr<47>nen</HeadLine>
+        </NewsLines>
+        <NewsItemRef NewsItem="011022154450.sq80bp9h.xml"/>
+      </NewsComponent>
+      <NewsComponent>
+        <NewsLines>
+          <HeadLine>INFOGRAFIK: Das Berliner Wahlergebnis</HeadLine>
+        </NewsLines>
+        <NewsItemRef NewsItem="011022113032.remo00m7.xml"/>
+      </NewsComponent>
+      <NewsComponent>
+        <NewsLines>
+          <HeadLine>Schwierige Koalitionsverhandlungen in Berlin</HeadLine>
+        </NewsLines>
+        <NewsItemRef NewsItem="011022124314.9hv2kozk.xml"/>
+      </NewsComponent>
+      <NewsComponent>
+        <NewsLines>
+          <HeadLine>Die Lieblingsfarben des Kanzlers sind Rot Gelb Gr<47>n</HeadLine>
+        </NewsLines>
+        <NewsItemRef NewsItem="011022134541.cmmaoim7.xml"/>
+      </NewsComponent>
+      <NewsComponent>
+        <NewsLines>
+          <HeadLine>INFOGRAFIK: Wen w<>hlt Wowereit?</HeadLine>
+        </NewsLines>
+        <NewsItemRef NewsItem="011022122545.hl3z2as6.xml"/>
+      </NewsComponent>
+      <NewsComponent>
+        <NewsLines>
+          <HeadLine>CDU ist auch in kommunalen Rath<74>usern der Verlierer</HeadLine>
+        </NewsLines>
+        <NewsItemRef NewsItem="011022120205.b8sykfvu.xml"/>
+      </NewsComponent>
+      <NewsComponent>
+        <NewsLines>
+          <HeadLine>Gutes Abschneiden der PDS hat verschiedene Gr<47>nde</HeadLine>
+        </NewsLines>
+        <NewsItemRef NewsItem="011022134159.agvne048.xml"/>
+      </NewsComponent>
+      <NewsComponent>
+        <NewsLines>
+          <HeadLine>Ans Regieren hat sich Klaus Wowereit gew<65>hnt</HeadLine>
+        </NewsLines>
+        <NewsItemRef NewsItem="011021161031.1oq7qyub.xml"/>
+      </NewsComponent>
+      <NewsComponent>
+        <NewsLines>
+          <HeadLine>Steffel brachte CDU nicht auf Erfolgskurs</HeadLine>
+        </NewsLines>
+        <NewsItemRef NewsItem="011021165007.kt9qog9m.xml"/>
+      </NewsComponent>
+      <NewsComponent>
+        <NewsLines>
+          <HeadLine>Sibyll Klotz: Vollblutpolitikerin mit "Berliner Schnauze"</HeadLine>
+        </NewsLines>
+        <NewsItemRef NewsItem="011021184658.lctevest.xml"/>
+      </NewsComponent>
+      <NewsComponent>
+        <NewsLines>
+          <HeadLine>Mit Gysi muss weiter gerechnet werden</HeadLine>
+        </NewsLines>
+        <NewsItemRef NewsItem="011021180441.6tpvgx0y.xml"/>
+      </NewsComponent>
+      <NewsComponent>
+        <NewsLines>
+          <HeadLine>Rexrodt - das Stehaufm<66>nnchen der Berliner FDP</HeadLine>
+        </NewsLines>
+        <NewsItemRef NewsItem="011021165558.gujrz59m.xml"/>
+      </NewsComponent>
+    </NewsComponent>
+  </NewsItem>
+</NewsML>

test/valid/rss.xml

@@ -17,7 +17,6 @@
   
   Based on RSS DTD originally created by
   Lars Marius Garshol - larsga@ifi.uio.no.
-  $Id: rss-0.91.dtd,v 1.1 1999/07/25 07:59:31 danda Exp $
   
 -->
 <!ELEMENT rss (channel)>