Fix license information for libjpeg-turbo

Fix the license metadata in that libjpeg contains parts under three
different bsd-like licenses. Also, do include the IJG, zlib
license texts in the metadata.

[ChangeLog][Third-Party Code] Clarified that libjpeg-turbo is actually
covered by three licenses, not only IJG.

Pick-to: 6.1 6.0
Change-Id: I6c4e3e8577bdf83e7e73474b34b0553cbe1d9b6d
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>

src/3rdparty/libjpeg/COPYRIGHT.txt

@@ -0,0 +1,12 @@
+Copyright (C) 2009-2021 D. R. Commander
+Copyright (C) 2015, 2020 Google, Inc.
+Copyright (C) 2019 Arm Limited
+Copyright (C) 2015-2016, 2018 Matthieu Darbois
+Copyright (C) 2011-2016 Siarhei Siamashka
+Copyright (C) 2015 Intel Corporation
+Copyright (C) 2013-2014 Linaro Limited
+Copyright (C) 2013-2014 MIPS Technologies, Inc.
+Copyright (C) 2009, 2012 Pierre Ossman for Cendio AB
+Copyright (C) 2009-2011 Nokia Corporation and/or its subsidiary(-ies)
+Copyright (C) 1999-2006 MIYASAKA Masaru
+Copyright (C) 1991-2017 Thomas G. Lane, Guido Vollbeding

src/3rdparty/libjpeg/ijg-license.txt

@@ -0,0 +1,34 @@
+The authors make NO WARRANTY or representation, either express or implied,
+with respect to this software, its quality, accuracy, merchantability, or
+fitness for a particular purpose.  This software is provided "AS IS", and you,
+its user, assume the entire risk as to its quality and accuracy.
+
+This software is copyright (C) 1991-2020, Thomas G. Lane, Guido Vollbeding.
+All Rights Reserved except as specified below.
+
+Permission is hereby granted to use, copy, modify, and distribute this
+software (or portions thereof) for any purpose, without fee, subject to these
+conditions:
+(1) If any part of the source code for this software is distributed, then this
+README file must be included, with this copyright and no-warranty notice
+unaltered; and any additions, deletions, or changes to the original files
+must be clearly indicated in accompanying documentation.
+(2) If only executable code is distributed, then the accompanying
+documentation must state that "this software is based in part on the work of
+the Independent JPEG Group".
+(3) Permission for use of this software is granted only if the user accepts
+full responsibility for any undesirable consequences; the authors accept
+NO LIABILITY for damages of any kind.
+
+These conditions apply to any software derived from or based on the IJG code,
+not just to the unmodified library.  If you use our work, you ought to
+acknowledge us.
+
+Permission is NOT granted for the use of any IJG author's name or company name
+in advertising or publicity relating to this software or products derived from
+it.  This software may be referred to only as "the Independent JPEG Group's
+software".
+
+We specifically permit and encourage the use of this software as the basis of
+commercial products, provided that all warranty or liability claims are
+assumed by the product vendor.

src/3rdparty/libjpeg/qt_attribution.json

@@ -7,19 +7,8 @@
     "Description": "The Independent JPEG Group's JPEG software",
     "Homepage": "http://libjpeg-turbo.virtualgl.org/",
     "Version": "2.1.0",
-    "License": "Independent JPEG Group License",
-    "LicenseId": "IJG",
-    "LicenseFile": "LICENSE",
-    "Copyright": "Copyright (C) 2009-2021 D. R. Commander
-Copyright (C) 2015, 2020 Google, Inc.
-Copyright (C) 2019 Arm Limited
-Copyright (C) 2015-2016, 2018 Matthieu Darbois
-Copyright (C) 2011-2016 Siarhei Siamashka
-Copyright (C) 2015 Intel Corporation
-Copyright (C) 2013-2014 Linaro Limited
-Copyright (C) 2013-2014 MIPS Technologies, Inc.
-Copyright (C) 2009, 2012 Pierre Ossman for Cendio AB
-Copyright (C) 2009-2011 Nokia Corporation and/or its subsidiary(-ies)
-Copyright (C) 1999-2006 MIYASAKA Masaru
-Copyright (C) 1991-2017 Thomas G. Lane, Guido Vollbeding"
+    "License": "Independent JPEG Group License and BSD 3-Clause \"New\" or \"Revised\" License and zlib License",
+    "LicenseId": "IJG AND BSD-3-Clause AND Zlib",
+    "LicenseFiles": [ "LICENSE", "ijg-license.txt", "zlib-license.txt"],
+    "CopyrightFile": "COPYRIGHT.txt"
 }

src/3rdparty/libjpeg/zlib-license.txt

@@ -0,0 +1,15 @@
+This software is provided 'as-is', without any express or implied
+warranty.  In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not
+   claim that you wrote the original software. If you use this software
+   in a product, an acknowledgment in the product documentation would be
+   appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be
+   misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.