Tweak to Value Compaction to do case-insensitive comparision of language tags.

Author: gkellogg

index.html

@@ -4163,6 +4163,7 @@ <h3>Algorithm</h3>
           </ol>
         </li>
         <li>Otherwise, if the value of `@language` in <var>item</var> exactly matches <var>language</var>,
+          <span class="changed">using a case-insenstive comparision</span>
           if it is not `null`, or is not present, if <var>language</var> is `null`,
           <span class="changed">and the value of `@direction` in <var>item</var> exactly matches <var>direction</var>,
             if it is not `null`, or is not present, if <var>direction</var> is `null`</span>: