Synchronize Unicode license text from unicode.org

The text of <https://unicode.org/license.txt> was swapped out from
"UNICODE, INC. LICENSE AGREEMENT - DATA FILES AND SOFTWARE" to "UNICODE
LICENSE V3" between the dates of 2023.06.03 and 2023.09.11, which means
between Unicode 15.0.0 (2022.09.13) and Unicode 15.1.0 (2023.09.12).

    https://web.archive.org/web/20230603182532/https://www.unicode.org/license.txt
    https://web.archive.org/web/20230911222703/https://www.unicode.org/license.txt
    https://unicode.org/versions/Unicode15.0.0/
    https://unicode.org/versions/Unicode15.1.0/

A license wording change is not mentioned in the 15.1.0 release
summary or announcement post.

    https://www.unicode.org/versions/Unicode15.1.0/
    http://blog.unicode.org/2023/09/announcing-unicode-standard-version-151.html

But I guess we are intended to infer that data files from Unicode 15.1.0
should be specified as licensed Unicode-3.0 as opposed to
Unicode-DFS-2016.

    https://spdx.org/licenses/Unicode-3.0.html
    https://spdx.org/licenses/Unicode-DFS-2016.html

Author: dtolnay

COPYRIGHT

@@ -343,49 +343,42 @@ their own copyright notices and license terms:
 * Portions of internationalization code use code or data from Unicode, which
   carry the following license:
 
-      UNICODE, INC. LICENSE AGREEMENT - DATA FILES AND SOFTWARE
-
-    See Terms of Use <https://www.unicode.org/copyright.html>
-    for definitions of Unicode Inc.’s Data Files and Software.
-
-    NOTICE TO USER: Carefully read the following legal agreement.
-    BY DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING UNICODE INC.'S
-    DATA FILES ("DATA FILES"), AND/OR SOFTWARE ("SOFTWARE"),
-    YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE
-    TERMS AND CONDITIONS OF THIS AGREEMENT.
-    IF YOU DO NOT AGREE, DO NOT DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE
-    THE DATA FILES OR SOFTWARE.
+    UNICODE LICENSE V3
 
     COPYRIGHT AND PERMISSION NOTICE
 
-    Copyright © 1991-2022 Unicode, Inc. All rights reserved.
-    Distributed under the Terms of Use in https://www.unicode.org/copyright.html.
-
-    Permission is hereby granted, free of charge, to any person obtaining
-    a copy of the Unicode data files and any associated documentation
-    (the "Data Files") or Unicode software and any associated documentation
-    (the "Software") to deal in the Data Files or Software
-    without restriction, including without limitation the rights to use,
-    copy, modify, merge, publish, distribute, and/or sell copies of
-    the Data Files or Software, and to permit persons to whom the Data Files
-    or Software are furnished to do so, provided that either
-    (a) this copyright and permission notice appear with all copies
-    of the Data Files or Software, or
-    (b) this copyright and permission notice appear in associated
-    Documentation.
-
-    THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF
-    ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
-    WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-    NONINFRINGEMENT OF THIRD PARTY RIGHTS.
-    IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS
-    NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL
-    DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
-    DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
-    TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
-    PERFORMANCE OF THE DATA FILES OR SOFTWARE.
-
-    Except as contained in this notice, the name of a copyright holder
-    shall not be used in advertising or otherwise to promote the sale,
-    use or other dealings in these Data Files or Software without prior
-    written authorization of the copyright holder.
+    Copyright © 1991-2024 Unicode, Inc.
+
+    NOTICE TO USER: Carefully read the following legal agreement. BY
+    DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING DATA FILES, AND/OR
+    SOFTWARE, YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE
+    TERMS AND CONDITIONS OF THIS AGREEMENT. IF YOU DO NOT AGREE, DO NOT
+    DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE THE DATA FILES OR SOFTWARE.
+
+    Permission is hereby granted, free of charge, to any person obtaining a
+    copy of data files and any associated documentation (the "Data Files") or
+    software and any associated documentation (the "Software") to deal in the
+    Data Files or Software without restriction, including without limitation
+    the rights to use, copy, modify, merge, publish, distribute, and/or sell
+    copies of the Data Files or Software, and to permit persons to whom the
+    Data Files or Software are furnished to do so, provided that either (a)
+    this copyright and permission notice appear with all copies of the Data
+    Files or Software, or (b) this copyright and permission notice appear in
+    associated Documentation.
+
+    THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+    KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
+    THIRD PARTY RIGHTS.
+
+    IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE
+    BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES,
+    OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+    WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+    ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THE DATA
+    FILES OR SOFTWARE.
+
+    Except as contained in this notice, the name of a copyright holder shall
+    not be used in advertising or otherwise to promote the sale, use or other
+    dealings in these Data Files or Software without prior written
+    authorization of the copyright holder.

LICENSES/Unicode-3.0.txt

@@ -0,0 +1,39 @@
+UNICODE LICENSE V3
+
+COPYRIGHT AND PERMISSION NOTICE
+
+Copyright © 1991-2024 Unicode, Inc.
+
+NOTICE TO USER: Carefully read the following legal agreement. BY
+DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING DATA FILES, AND/OR
+SOFTWARE, YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE
+TERMS AND CONDITIONS OF THIS AGREEMENT. IF YOU DO NOT AGREE, DO NOT
+DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE THE DATA FILES OR SOFTWARE.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of data files and any associated documentation (the "Data Files") or
+software and any associated documentation (the "Software") to deal in the
+Data Files or Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, and/or sell
+copies of the Data Files or Software, and to permit persons to whom the
+Data Files or Software are furnished to do so, provided that either (a)
+this copyright and permission notice appear with all copies of the Data
+Files or Software, or (b) this copyright and permission notice appear in
+associated Documentation.
+
+THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
+THIRD PARTY RIGHTS.
+
+IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE
+BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES,
+OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THE DATA
+FILES OR SOFTWARE.
+
+Except as contained in this notice, the name of a copyright holder shall
+not be used in advertising or otherwise to promote the sale, use or other
+dealings in these Data Files or Software without prior written
+authorization of the copyright holder.

LICENSES/Unicode-DFS-2016.txt

@@ -63,8 +63,8 @@ SPDX-License-Identifier = "Apache-2.0 WITH LLVM-exception AND (Apache-2.0 OR MIT
 [[annotations]]
 path = "library/core/src/unicode/unicode_data.rs"
 precedence = "override"
-SPDX-FileCopyrightText = "1991-2022 Unicode, Inc. All rights reserved."
-SPDX-License-Identifier = "Unicode-DFS-2016"
+SPDX-FileCopyrightText = "1991-2024 Unicode, Inc."
+SPDX-License-Identifier = "Unicode-3.0"
 
 [[annotations]]
 path = "library/std/src/sync/mpmc/**"