Merging r6145 through r6171 from trunk to ogl-es branch

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6172 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/libpng/png.5

@@ -1,47 +1,49 @@
-.TH PNG 5 "June 9, 2016"
+.TH PNG 5 "April 14, 2019"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
+
 .SH DESCRIPTION
 PNG (Portable Network Graphics) is an extensible file format for the
-lossless, portable, well-compressed storage of raster images. PNG provides
-a patent-free replacement for GIF and can also replace many
+lossless, portable, well-compressed storage of raster images.  PNG
+provides a patent-free replacement for GIF, and can also replace many
 common uses of TIFF. Indexed-color, grayscale, and truecolor images are
-supported, plus an optional alpha channel. Sample depths range from
+supported, plus an optional alpha channel.  Sample depths range from
 1 to 16 bits.
 .br
-
-PNG is designed to work well in online viewing applications, such as the
-World Wide Web, so it is fully streamable with a progressive display
-option. PNG is robust, providing both full file integrity checking and
-fast, simple detection of common transmission errors. Also, PNG can store
-gamma and chromaticity data for improved color matching on heterogeneous
-platforms.
+PNG is designed to work well in online viewing applications, such
+as the World Wide Web, so it is fully streamable with a progressive
+display option.  PNG is robust, providing both full file integrity
+checking and fast, simple detection of common transmission errors.
+Also, PNG can store gamma and chromaticity data for improved color
+matching on heterogeneous platforms.
 
 .SH "SEE ALSO"
 .BR "libpng"(3), " libpngpf"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
 .LP
-PNG specification (second edition), November 2003:
+PNG Specification (Second Edition), November 2003:
 .IP
 .br
-  <http://www.w3.org/TR/2003/REC-PNG-20031110/
-PNG 1.2 specification, July 1999:
-.IP
-.br
-http://png-mng.sourceforge.net/pub/png/spec/1.2/
+https://www.w3.org/TR/2003/REC-PNG-20031110/
 .LP
-PNG 1.0 specification, October 1996:
+PNG 1.2 Specification, July 1999:
+.IP
+.br
+https://png-mng.sourceforge.io/pub/png/spec/1.2/
+.LP
+PNG 1.0 Specification, October 1996:
 .IP
 .br
 RFC 2083
+.br
+https://www.ietf.org/rfc/rfc2083.txt
 .IP
 .br
-http://www.ietf.org/rfc/rfc2083.txt
+or W3C Recommendation
 .br
-or (as a W3C Recommendation) at
-.br
-http://www.w3.org/TR/REC-png-961001
+https://www.w3.org/TR/REC-png-961001
+
 .SH AUTHORS
-This man page: Glenn Randers-Pehrson
+This man page: Cosmin Truta, Glenn Randers-Pehrson
 .LP
 Portable Network Graphics (PNG) Specification (Second Edition)
 Information technology - Computer graphics and image processing -
@@ -53,22 +55,30 @@ Glenn Randers-Pehrson and others (png-list).
 .LP
 Portable Network Graphics (PNG) Specification Version 1.0 (October 1, 1996):
 Thomas Boutell and others (png-list).
-.LP
 
-
-.SH COPYRIGHT NOTICE
+.SH COPYRIGHT
 .LP
-This man page is Copyright (c) 1998-2006 Glenn Randers-Pehrson.  See png.h
-for conditions of use and distribution.
+This man page is
+.br
+Copyright (c) 2018-2019 Cosmin Truta.
+.br
+Copyright (c) 1998-2006 Glenn Randers-Pehrson.
+.br
+See png.h for conditions of use and distribution.
 .LP
 The PNG Specification (Second Edition) is
+.br
 Copyright (c) 2003 W3C. (MIT, ERCIM, Keio), All Rights Reserved.
 .LP
-The PNG-1.2 specification is copyright (c) 1999 Glenn Randers-Pehrson.
+The PNG-1.2 Specification is
+.br
+Copyright (c) 1999 Glenn Randers-Pehrson.
+.br
 See the specification for conditions of use and distribution.
 .LP
-The PNG-1.0 specification is copyright (c) 1996 Massachusetts Institute of
-Technology.  See the specification for conditions of use and distribution.
-.LP
+The PNG-1.0 Specification is
+.br
+Copyright (c) 1996 Massachusetts Institute of Technology.
+.br
+See the specification for conditions of use and distribution.
 .\" end of man page
-