Use the same license header for all files.

src/site/resources/release-notes/RELEASE-NOTES-3.0.txt

@@ -1,4 +1,19 @@
-$Id: RELEASE-NOTES.txt 1144999 2011-07-11 01:02:13Z ggregory $
+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.
+
+=============================================================================
 
                         Commons Lang Package
                             Version 3.0