C.17 libpng License

The following software may be included in this product:

libpng

COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
 
This code is released under the libpng license (See LICENSE, below)
 
If you modify libpng you may insert additional notices immediately following
this sentence.
 
libpng version 1.2.50 - July 10, 2012
 * Copyright (c) 1998-2012 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
libpng versions 1.2.6, August 15, 2004, through 1.4.4, September 23, 2010,
are
Copyright (c) 2004, 2006-2010 Glenn Randers-Pehrson, and are distributed
according to the same disclaimer and license as libpng-1.2.5 with the
following individual added to the list of Contributing Authors
 
Cosmin Truta
 
libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are
Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are distributed according
to the same disclaimer and license as libpng-1.0.6 with the following
individuals added to the list of Contributing Authors
 
Simon-Pierre Cadieux
Eric S. Raymond
Gilles Vollant
 
and with the following additions to the disclaimer:
 
There is no warranty against interference with your enjoyment of the library
or against infringement.  There is no warranty that our efforts or the
library will fulfill any of your particular purposesor needs.  This library
is provided with all faults, and the entire risk of satisfactory quality,
performance, accuracy, and effort is with the user.
 
libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
Copyright (c) 1998, 1999 Glenn Randers-Pehrson, and are distributed according
to the same disclaimer and license as libpng-0.96, with the following
individuals added to the list of Contributing Authors:
 
Tom Lane
Glenn Randers-Pehrson
Willem van Schaik
 
libpng versions 0.89, June 1996, through 0.96, May 1997, are
Copyright (c) 1996, 1997 Andreas Dilger Distributed according to the same
disclaimer and license as libpng-0.88, with the following individuals added
to the list of Contributing Authors:
 
John Bowler
Kevin Bracey
Sam Bushell
Magnus Holmgren
Greg Roelofs
Tom Tanner
 
libpng versions 0.5, May 1995, through 0.88, January 1996, are
Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
 
For the purposes of this copyright and license, "Contributing Authors" is
defined as the following set of individuals:
 
Andreas Dilger
Dave Martindale
Guy Eric Schalnat
Paul Schmidt
Tim Wegner
 
The PNG Reference Library is supplied "AS IS".  The Contributing Authors and
Group 42, Inc. disclaim all warranties, expressed or implied, including,
without limitation, the warranties of merchantability and of fitness for any
purpose.  The Contributing Authors and Group 42, Inc. assume no liability for
direct, indirect, incidental, special, exemplary,
or consequential damages, which may result from the use of the PNG Reference
Library, even if advised of the possibility of such damage.
 
Permission is hereby granted to use, copy, modify, and distribute this source
code, or portions hereof, for any purpose, without fee, subject to the
following restrictions:
 
1. The origin of this source code must not be misrepresented.
 
2. Altered versions must be plainly marked as such and must not be
misrepresented as being the original source.
 
3. This Copyright notice may not be removed or altered from any source or
altered source distribution.
 
The Contributing Authors and Group 42, Inc. specifically permit, without fee,
and encourage the use of this source code as a component to supporting the
PNG file format in commercial products.  If you use this source code in a
product, acknowledgment is not required but would be appreciated.
 
A "png_get_copyright" function is available, for convenient use in "about"
boxes and the like:
 
printf("%s",png_get_copyright(NULL));
 
Also, the PNG logo (in PNG format, of course) is supplied in the files
"pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
 
Libpng is OSI Certified Open Source Software.  OSI Certified Open Source is a
certification mark of the Open Source Initiative.
 
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
September 23, 2010
glennrp at users.sourceforge.net
September 23, 2010