Add missing final modifier

Closes GH-1152.

language/predefined/closure.xml

@@ -42,6 +42,7 @@
 <!-- {{{ Class synopsis -->
     <classsynopsisinfo>
      <ooclass>
+      <modifier>final</modifier>
       <classname>Closure</classname>
      </ooclass>
     </classsynopsisinfo>

language/predefined/weakreference.xml

@@ -31,6 +31,7 @@
 <!-- {{{ Class synopsis -->
     <classsynopsisinfo>
      <ooclass>
+      <modifier>final</modifier>
       <classname>WeakReference</classname>
      </ooclass>
     </classsynopsisinfo>

reference/dom/domexception.xml

@@ -41,6 +41,7 @@ FIXME: Remove me once you perform substitutions
 <!-- {{{ Class synopsis -->
     <classsynopsisinfo>
      <ooclass>
+      <modifier>final</modifier>
       <classname>DOMException</classname>
      </ooclass>
  

reference/hash/hashcontext.xml

@@ -27,6 +27,7 @@
 <!-- {{{ Class synopsis -->
     <classsynopsisinfo>
      <ooclass>
+      <modifier>final</modifier>
       <classname>HashContext</classname>
      </ooclass>
     </classsynopsisinfo>

reference/reflection/reflectiongenerator.xml

@@ -28,6 +28,7 @@
 <!-- {{{ Class synopsis -->
     <classsynopsisinfo>
      <ooclass>
+      <modifier>final</modifier>
       <classname>ReflectionGenerator</classname>
      </ooclass>
     </classsynopsisinfo>
@@ -42,6 +43,30 @@
 <!-- }}} -->
   </section>
 
+  <section role="changelog">
+   &reftitle.changelog;
+   <para>
+    <informaltable>
+     <tgroup cols="2">
+      <thead>
+       <row>
+        <entry>&Version;</entry>
+        <entry>&Description;</entry>
+       </row>
+      </thead>
+      <tbody>
+       <row>
+        <entry>8.0.0</entry>
+        <entry>
+         The class is <modifier>final</modifier> now.
+        </entry>
+       </row>
+      </tbody>
+     </tgroup>
+    </informaltable>
+   </para>
+  </section>
+
  </partintro>
 
  &reference.reflection.entities.reflectiongenerator;