copyright: New file

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+Upstream Source
+===============
+
+Copyright (C) 2001,2002,2003,2004,2005,2006,2007,2008,2009,2010
+Amos Waterland <apw@rossby.metr.ou.edu>
+
+This program is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2 of the License, or (at your option)
+any later version.
+
+This program 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 General Public License for
+more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc., 59
+Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+On this system, a copy of the GNU General Public License may be found at
+<file:///usr/share/common-licenses/GPL-2>.
+
+
+Distribution Packaging
+======================
+
+Copyright (C) 2019, 2021  Patrick McDermott
+
+These files may be reproduced, distributed, modified, and otherwise dealt in
+under the terms of the Expat License.
+
+On this system, a copy of the Expat License may be found at
+<file:///usr/share/common-licenses/Expat>.