This is the license and copyright information included in all of the emergent files:
// Copyright, 1995-2011, Regents of the University of Colorado, // Carnegie Mellon University, Princeton University. // // This is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2.1 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details.
for full text of the GPL 2.0 license, see: http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt