zlib: Update from 1.2.5 to 1.2.13

The updated files were extracted from:

https://www.zlib.net/zlib-1.2.13.tar.xz

The archive had an SHA-256 hash value of:

d14c38e313afc35a9a8760dadf26042f51ea0f5d154b0630a31da0540107fb98

Close #4902.

1 files changed, 17 insertions, 13 deletions

diff --git a/cpukit/zlib/README b/cpukit/zlib/README
index f24aeee110..ba34d1894a 100644
--- a/cpukit/zlib/README
+++ b/cpukit/zlib/README
@@ -1,22 +1,23 @@
 ZLIB DATA COMPRESSION LIBRARY
 
-zlib 1.2.4 is a general purpose data compression library.  All the code is
+zlib 1.2.13 is a general purpose data compression library.  All the code is
 thread safe.  The data format used by the zlib library is described by RFCs
 (Request for Comments) 1950 to 1952 in the files
-http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format)
-and rfc1952.txt (gzip format).
+http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and
+rfc1952 (gzip format).
 
 All functions of the compression library are documented in the file zlib.h
 (volunteer to write man pages welcome, contact zlib@gzip.org).  A usage example
-of the library is given in the file example.c which also tests that the library
-is working correctly.  Another example is given in the file minigzip.c.  The
-compression library itself is composed of all source files except example.c and
-minigzip.c.
+of the library is given in the file test/example.c which also tests that
+the library is working correctly.  Another example is given in the file
+test/minigzip.c.  The compression library itself is composed of all source
+files in the root directory.
 
 To compile all files and run the test program, follow the instructions given at
 the top of Makefile.in.  In short "./configure; make test", and if that goes
-well, "make install" should work for most flavors of Unix.  For Windows, use one
-of the special makefiles in win32/ or projects/ .  For VMS, use make_vms.com.
+well, "make install" should work for most flavors of Unix.  For Windows, use
+one of the special makefiles in win32/ or contrib/vstudio/ .  For VMS, use
+make_vms.com.
 
 Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant
 <info@winimage.com> for the Windows DLL version.  The zlib home page is
@@ -30,7 +31,7 @@ Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan.  1997
 issue of Dr.  Dobb's Journal; a copy of the article is available at
 http://marknelson.us/1997/01/01/zlib-engine/ .
 
-The changes made in version 1.2.4 are documented in the file ChangeLog.
+The changes made in version 1.2.13 are documented in the file ChangeLog.
 
 Unsupported third party contributions are provided in directory contrib/ .
 
@@ -43,7 +44,7 @@ http://search.cpan.org/~pmqs/IO-Compress-Zlib/ .
 
 A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is
 available in Python 1.5 and later versions, see
-http://www.python.org/doc/lib/module-zlib.html .
+http://docs.python.org/library/zlib.html .
 
 zlib is built into tcl: http://wiki.tcl.tk/4610 .
 
@@ -83,7 +84,7 @@ Acknowledgments:
 
 Copyright notice:
 
- (C) 1995-2010 Jean-loup Gailly and Mark Adler
+ (C) 1995-2022 Jean-loup Gailly and Mark Adler
 
   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
@@ -107,7 +108,10 @@ Copyright notice:
 If you use the zlib library in a product, we would appreciate *not* receiving
 lengthy legal documents to sign.  The sources are provided for free but without
 warranty of any kind.  The library has been entirely written by Jean-loup
-Gailly and Mark Adler; it does not include third-party code.
+Gailly and Mark Adler; it does not include third-party code.  We make all
+contributions to and distributions of this project solely in our personal
+capacity, and are not conveying any rights to any intellectual property of
+any third parties.
 
 If you redistribute modified sources, we would appreciate that you include in
 the file ChangeLog history information documenting your changes.  Please read