Update copyright dates with scripts/update-copyrights

I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master

13 files changed, 13 insertions, 13 deletions

diff --git a/localedata/unicode-gen/Makefile b/localedata/unicode-gen/Makefile
index 4cd026188e..d0dd1b78a5 100644
--- a/localedata/unicode-gen/Makefile
+++ b/localedata/unicode-gen/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 2015-2020 Free Software Foundation, Inc.
+# Copyright (C) 2015-2021 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 
 # The GNU C Library is free software; you can redistribute it and/or
diff --git a/localedata/unicode-gen/ctype_compatibility.py b/localedata/unicode-gen/ctype_compatibility.py
index 3f91b48a45..adb3928e34 100755
--- a/localedata/unicode-gen/ctype_compatibility.py
+++ b/localedata/unicode-gen/ctype_compatibility.py
@@ -1,6 +1,6 @@
 #!/usr/bin/python3
 # -*- coding: utf-8 -*-
-# Copyright (C) 2014-2020 Free Software Foundation, Inc.
+# Copyright (C) 2014-2021 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 #
 # The GNU C Library is free software; you can redistribute it and/or
diff --git a/localedata/unicode-gen/ctype_compatibility_test_cases.py b/localedata/unicode-gen/ctype_compatibility_test_cases.py
index 5f5bc4226c..d6a6fcb5da 100644
--- a/localedata/unicode-gen/ctype_compatibility_test_cases.py
+++ b/localedata/unicode-gen/ctype_compatibility_test_cases.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-# Copyright (C) 2014-2020 Free Software Foundation, Inc.
+# Copyright (C) 2014-2021 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 #
 # The GNU C Library is free software; you can redistribute it and/or
diff --git a/localedata/unicode-gen/gen_translit_circle.py b/localedata/unicode-gen/gen_translit_circle.py
index f497e896c8..a83dccc163 100644
--- a/localedata/unicode-gen/gen_translit_circle.py
+++ b/localedata/unicode-gen/gen_translit_circle.py
@@ -2,7 +2,7 @@
 # -*- coding: utf-8 -*-
 #
 # Generate a translit_circle file from a UnicodeData file.
-# Copyright (C) 2015-2020 Free Software Foundation, Inc.
+# Copyright (C) 2015-2021 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 #
 # The GNU C Library is free software; you can redistribute it and/or
diff --git a/localedata/unicode-gen/gen_translit_cjk_compat.py b/localedata/unicode-gen/gen_translit_cjk_compat.py
index e0e7f57026..a040511d06 100644
--- a/localedata/unicode-gen/gen_translit_cjk_compat.py
+++ b/localedata/unicode-gen/gen_translit_cjk_compat.py
@@ -2,7 +2,7 @@
 # -*- coding: utf-8 -*-
 #
 # Generate a translit_cjk_compat file from a UnicodeData file.
-# Copyright (C) 2015-2020 Free Software Foundation, Inc.
+# Copyright (C) 2015-2021 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 #
 # The GNU C Library is free software; you can redistribute it and/or
diff --git a/localedata/unicode-gen/gen_translit_combining.py b/localedata/unicode-gen/gen_translit_combining.py
index 004295f4d5..88be8f4b8a 100644
--- a/localedata/unicode-gen/gen_translit_combining.py
+++ b/localedata/unicode-gen/gen_translit_combining.py
@@ -2,7 +2,7 @@
 # -*- coding: utf-8 -*-
 #
 # Generate a translit_combining file from a UnicodeData file.
-# Copyright (C) 2015-2020 Free Software Foundation, Inc.
+# Copyright (C) 2015-2021 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 #
 # The GNU C Library is free software; you can redistribute it and/or
diff --git a/localedata/unicode-gen/gen_translit_compat.py b/localedata/unicode-gen/gen_translit_compat.py
index 0fe8a55f6f..c8c63b23af 100644
--- a/localedata/unicode-gen/gen_translit_compat.py
+++ b/localedata/unicode-gen/gen_translit_compat.py
@@ -2,7 +2,7 @@
 # -*- coding: utf-8 -*-
 #
 # Generate a translit_compat file from a UnicodeData file.
-# Copyright (C) 2015-2020 Free Software Foundation, Inc.
+# Copyright (C) 2015-2021 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 #
 # The GNU C Library is free software; you can redistribute it and/or
diff --git a/localedata/unicode-gen/gen_translit_font.py b/localedata/unicode-gen/gen_translit_font.py
index ad03cb0491..db41b47fab 100644
--- a/localedata/unicode-gen/gen_translit_font.py
+++ b/localedata/unicode-gen/gen_translit_font.py
@@ -2,7 +2,7 @@
 # -*- coding: utf-8 -*-
 #
 # Generate a translit_font file from a UnicodeData file.
-# Copyright (C) 2015-2020 Free Software Foundation, Inc.
+# Copyright (C) 2015-2021 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 #
 # The GNU C Library is free software; you can redistribute it and/or
diff --git a/localedata/unicode-gen/gen_translit_fraction.py b/localedata/unicode-gen/gen_translit_fraction.py
index 36eb6588a8..c3c1513eb9 100644
--- a/localedata/unicode-gen/gen_translit_fraction.py
+++ b/localedata/unicode-gen/gen_translit_fraction.py
@@ -2,7 +2,7 @@
 # -*- coding: utf-8 -*-
 #
 # Generate a translit_fraction file from a UnicodeData file.
-# Copyright (C) 2015-2020 Free Software Foundation, Inc.
+# Copyright (C) 2015-2021 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 #
 # The GNU C Library is free software; you can redistribute it and/or
diff --git a/localedata/unicode-gen/gen_unicode_ctype.py b/localedata/unicode-gen/gen_unicode_ctype.py
index 43e1686be1..7548961df1 100755
--- a/localedata/unicode-gen/gen_unicode_ctype.py
+++ b/localedata/unicode-gen/gen_unicode_ctype.py
@@ -1,7 +1,7 @@
 #!/usr/bin/python3
 #
 # Generate a Unicode conforming LC_CTYPE category from a UnicodeData file.
-# Copyright (C) 2014-2020 Free Software Foundation, Inc.
+# Copyright (C) 2014-2021 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 # Based on gen-unicode-ctype.c by Bruno Haible <haible@clisp.cons.org>, 2000.
 #
diff --git a/localedata/unicode-gen/unicode_utils.py b/localedata/unicode-gen/unicode_utils.py
index 292901d3ab..3263f4510b 100644
--- a/localedata/unicode-gen/unicode_utils.py
+++ b/localedata/unicode-gen/unicode_utils.py
@@ -1,6 +1,6 @@
 # Utilities to generate Unicode data for glibc from upstream Unicode data.
 #
-# Copyright (C) 2014-2020 Free Software Foundation, Inc.
+# Copyright (C) 2014-2021 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 #
 # The GNU C Library is free software; you can redistribute it and/or
diff --git a/localedata/unicode-gen/utf8_compatibility.py b/localedata/unicode-gen/utf8_compatibility.py
index 64eef95e0f..eca2e8cddc 100755
--- a/localedata/unicode-gen/utf8_compatibility.py
+++ b/localedata/unicode-gen/utf8_compatibility.py
@@ -1,6 +1,6 @@
 #!/usr/bin/python3
 # -*- coding: utf-8 -*-
-# Copyright (C) 2014-2020 Free Software Foundation, Inc.
+# Copyright (C) 2014-2021 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 #
 # The GNU C Library is free software; you can redistribute it and/or
diff --git a/localedata/unicode-gen/utf8_gen.py b/localedata/unicode-gen/utf8_gen.py
index 11c906b92f..899840923a 100755
--- a/localedata/unicode-gen/utf8_gen.py
+++ b/localedata/unicode-gen/utf8_gen.py
@@ -1,6 +1,6 @@
 #!/usr/bin/python3
 # -*- coding: utf-8 -*-
-# Copyright (C) 2014-2020 Free Software Foundation, Inc.
+# Copyright (C) 2014-2021 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 #
 # The GNU C Library is free software; you can redistribute it and/or