Add missing License header

Followup to r1844031

Render uninitialized min and max values in Summary Report as `#N/A`

In the Summary Report min and max values are initialized with
`Long#MAX_VALUE` and `Long#MIN_VALUE` to work easily with them.

Those initial values are looking weird in the rendered view.
Hide them by replacing the extrema by the text `#N/A`.

Closes #407 on github
Bugzilla Id: 62822



git-svn-id: https://svn.apache.org/repos/asf/jmeter/trunk@1844032 13f79535-47bb-0310-9956-ffa450edef68

src/jorphan/org/apache/jorphan/gui/MinMaxLongRenderer.java

@@ -1,3 +1,21 @@
+/*
+ * 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.
+ *
+ */
+
 package org.apache.jorphan.gui;
 
 /**