*   (C) Copyright 2011, 2013, 2015, Len Shustek
*
*   This program is free software: you can redistribute it and/or modify
*   it under the terms of version 3 of the GNU General Public License as
*   published by the Free Software Foundation at http://www.gnu.org/licenses,
*   with Additional Permissions under term 7(b) that the original copyright
*   notice and author attibution must be preserved and under term 7(c) that
*   modified versions be marked as different from the original.
*
*   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.
*