[langband-cvs] CVS: langband/lib/libpng CHANGES,NONE,1.1 LICENSE,NONE,1.1 libpng.txt,NONE,1.1

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Update of /cvsroot/langband/langband/lib/libpng
In directory usw-pr-cvs1:/tmp/cvs-serv9534

Added Files:
	CHANGES LICENSE libpng.txt 
Log Message:
import

--- NEW FILE: CHANGES ---

CHANGES - changes for libpng

version 0.2
  added reader into png.h
  fixed small problems in stub file
version 0.3
  added pull reader
  split up pngwrite.c to several files
  added pnglib.txt
  added example.c
  cleaned up writer, adding a few new tranformations
  fixed some bugs in writer
  interfaced with zlib 0.5
  added K&R support
  added check for 64 KB blocks for 16 bit machines
version 0.4
  cleaned up code and commented code
  simplified time handling into png_time
[...1117 lines suppressed...]
  Added -soname to the loader flags in makefile.dec, makefile.sgi, and
    makefile.sggcc.
  Added "test-installed" target to makefile.linux, makefile.gcmmx,
    makefile.sgi, and makefile.sggcc.
version 1.2.4beta3 [June 28, 2002]
  Plugged memory leak of row_buf in pngtest.c when there is a png_error().
  Detect buffer overflow in pngpread.c when IDAT is corrupted with extra data.
  Added "test-installed" target to makefile.32sunu, makefile.64sunu,
    makefile.beos, makefile.darwin, makefile.dec, makefile.macosx, 
    makefile.solaris, makefile.hpux, makefile.hpgcc, and makefile.so9.
version 1.2.4rc1 [July 2, 2002]
  Added "test-installed" target to makefile.cygwin and makefile.sco.
  Revised pnggccrd.c to be able to back out version 1.0.x via PNG_1_0_X macro.
version 1.2.4 [July 8, 2002]
  Changed png_warning() to png_error() when width is too large to process.

Send comments/corrections/commendations to
png...@cc... or to ra...@al...

Glenn R-P

--- NEW FILE: LICENSE ---

This copy of the libpng notices is provided for your convenience.  In case of
any discrepancy between this copy and the notices in the file png.h that is
included in the libpng distribution, the latter shall prevail.

COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:

If you modify libpng you may insert additional notices immediately following
this sentence.

libpng versions 1.0.7, July 1, 2000, through 1.2.4, July 8, 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 purposes
   or 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
ra...@al...
July 8, 2002

--- NEW FILE: libpng.txt ---
libpng.txt - A description on how to use and modify libpng

 libpng version 1.2.4 - July 8, 2002
 Updated and distributed by Glenn Randers-Pehrson
 <ra...@al...>
 Copyright (c) 1998-2002 Glenn Randers-Pehrson
 For conditions of distribution and use, see copyright
 notice in png.h.

 based on:

 libpng 1.0 beta 6  version 0.96 May 28, 1997
 Updated and distributed by Andreas Dilger
 Copyright (c) 1996, 1997 Andreas Dilger

 libpng 1.0 beta 2 - version 0.88  January 26, 1996
 For conditions of distribution and use, see copyright
 notice in png.h. Copyright (c) 1995, 1996 Guy Eric
 Schalnat, Group 42, Inc.
[...2866 lines suppressed...]
png_convert_from_time_t() function calls gmtime() to convert from system
clock time, which returns (year - 1900), which we properly convert to
the full 4-digit year.  There is a possibility that applications using
libpng are not passing 4-digit years into the png_convert_to_rfc_1123()
function, or that they are incorrectly passing only a 2-digit year
instead of "year - 1900" into the png_convert_from_struct_tm() function,
but this is not under our control.  The libpng documentation has always
stated that it works with 4-digit years, and the APIs have been
documented as such.

The tIME chunk itself is also Y2K compliant.  It uses a 2-byte unsigned
integer to hold the year, and can hold years as large as 65535.

zlib, upon which libpng depends, is also Y2K compliant.  It contains
no date-related code.

   Glenn Randers-Pehrson
   libpng maintainer
   PNG Development Group