Change License Headers

Also tweak the NOTICE file with some extras.

Change-Id:I09bc388089e515d7f51fd39c31bfbbc9f00cf84f
Reviewed-on: https://asterix-gerrit.ics.uci.edu/388
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Till Westmann <tillw@apache.org>
diff --git a/asterix-algebra/pom.xml b/asterix-algebra/pom.xml
index 0975c68..1535c94 100644
--- a/asterix-algebra/pom.xml
+++ b/asterix-algebra/pom.xml
@@ -1,12 +1,21 @@
-<!-- ! Copyright 2009-2013 by The Regents of the University of California 
-	! Licensed 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 from ! ! 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. ! -->
+<!--
+ ! 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.
+ !-->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>