add copyright,license header for OF-ext

src/main/java/org/openflow/vendor/openflow/OFOpenFlowVendorData.java

+/**
+*    Copyright 2012, Andrew Ferguson, Brown University
+*
+*    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 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.openflow.vendor.openflow;
 

src/main/java/org/openflow/vendor/openflow/OFOpenFlowVendorExtensions.java

+/**
+*    Copyright 2012, Andrew Ferguson, Brown University
+*
+*    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 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.openflow.vendor.openflow;
 
 import org.openflow.protocol.vendor.OFBasicVendorDataType;

src/main/java/org/openflow/vendor/openflow/OFQueueDeleteVendorData.java

+/**
+*    Copyright 2012, Andrew Ferguson, Brown University
+*
+*    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 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.openflow.vendor.openflow;
 
 import org.openflow.protocol.Instantiable;

src/main/java/org/openflow/vendor/openflow/OFQueueModifyVendorData.java

+/**
+*    Copyright 2012, Andrew Ferguson, Brown University
+*
+*    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 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.openflow.vendor.openflow;
 
 import org.openflow.protocol.Instantiable;

src/main/java/org/openflow/vendor/openflow/OFQueueVendorData.java

+/**
+*    Copyright 2012, Andrew Ferguson, Brown University
+*
+*    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 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.openflow.vendor.openflow;
 
 import java.util.ArrayList;