add/update license headers
diff --git a/algebricks/algebricks-common/pom.xml b/algebricks/algebricks-common/pom.xml
index 0e840fa..f89a392 100644
--- a/algebricks/algebricks-common/pom.xml
+++ b/algebricks/algebricks-common/pom.xml
@@ -1,3 +1,17 @@
+<!--
+ ! 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.
+ !-->
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>algebricks-common</artifactId>
diff --git a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksAbsolutePartitionConstraint.java b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksAbsolutePartitionConstraint.java
index 924d85b..39f3550 100644
--- a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksAbsolutePartitionConstraint.java
+++ b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksAbsolutePartitionConstraint.java
@@ -1,5 +1,5 @@
/*
- * Copyright 2009-2010 by The Regents of the University of California
+ * 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
diff --git a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksCountPartitionConstraint.java b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksCountPartitionConstraint.java
index 99091aa..dd62f47 100644
--- a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksCountPartitionConstraint.java
+++ b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksCountPartitionConstraint.java
@@ -1,5 +1,5 @@
/*
- * Copyright 2009-2010 by The Regents of the University of California
+ * 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
diff --git a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksPartitionConstraint.java b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksPartitionConstraint.java
index 929479c..a458451 100644
--- a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksPartitionConstraint.java
+++ b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksPartitionConstraint.java
@@ -1,5 +1,5 @@
/*
- * Copyright 2009-2010 by The Regents of the University of California
+ * 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
diff --git a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksPartitionConstraintHelper.java b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksPartitionConstraintHelper.java
index 54cdb59..8ad27b1 100644
--- a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksPartitionConstraintHelper.java
+++ b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/constraints/AlgebricksPartitionConstraintHelper.java
@@ -1,5 +1,5 @@
/*
- * Copyright 2009-2010 by The Regents of the University of California
+ * 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
diff --git a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/exceptions/AlgebricksException.java b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/exceptions/AlgebricksException.java
index b55a4b3..6f39167 100644
--- a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/exceptions/AlgebricksException.java
+++ b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/exceptions/AlgebricksException.java
@@ -1,5 +1,5 @@
/*
- * Copyright 2009-2010 by The Regents of the University of California
+ * 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
diff --git a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/exceptions/NotImplementedException.java b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/exceptions/NotImplementedException.java
index cb9e054..cc0c975 100644
--- a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/exceptions/NotImplementedException.java
+++ b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/exceptions/NotImplementedException.java
@@ -1,5 +1,5 @@
/*
- * Copyright 2009-2010 by The Regents of the University of California
+ * 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
diff --git a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/utils/ListSet.java b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/utils/ListSet.java
index acf1e6f..f4ed6c1 100644
--- a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/utils/ListSet.java
+++ b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/utils/ListSet.java
@@ -1,3 +1,17 @@
+/*
+ * 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.
+ */
package edu.uci.ics.hyracks.algebricks.common.utils;
import java.util.ArrayList;
diff --git a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/utils/Pair.java b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/utils/Pair.java
index ddd56da..e8ba583 100644
--- a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/utils/Pair.java
+++ b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/utils/Pair.java
@@ -1,5 +1,5 @@
/*
- * Copyright 2009-2010 by The Regents of the University of California
+ * 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
diff --git a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/utils/Triple.java b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/utils/Triple.java
index 0361152..fe76c4a 100644
--- a/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/utils/Triple.java
+++ b/algebricks/algebricks-common/src/main/java/edu/uci/ics/hyracks/algebricks/common/utils/Triple.java
@@ -1,5 +1,5 @@
/*
- * Copyright 2009-2010 by The Regents of the University of California
+ * 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