Upgrade Apache Solr to 4.5.0 and PySolr to 3.1.0.

All Solr indexes will need to be re-created.

java/solr/server/solr-webapp/webapp/tpl/threads.html

@@ -0,0 +1,56 @@
+<!--
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements.  See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF licenses this file to You under the Apache License, Version 2.0
+(the "License"); you may not use this file except in compliance with
+the License.  You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+<div id="threads" class="collapsed">
+
+  <div class="controls">
+    <a>
+      <span class="expand">Show all Stacktraces</span>
+      <span class="collapse">Hide all Stacktraces</span>
+    </a>
+  </div>
+
+  <div id="thread-dump">
+
+    <table border="0" cellpadding="0" cellspacing="0">
+
+      <thead>
+
+        <tr>
+
+          <th class="name">name</th>
+          <th class="time">cpuTime / userTime</th>
+                
+        </tr>
+
+      </thead>
+
+      <tbody>
+
+      </tbody>
+
+    </table>
+    
+  </div>
+
+  <div class="controls">
+    <a>
+      <span class="expand">Show all Stacktraces</span>
+      <span class="collapse">Hide all Stacktraces</span>
+    </a>
+  </div>
+
+</div>