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

8 files changed, 8 insertions, 8 deletions

diff --git a/catgets/Makefile b/catgets/Makefile
index 24cbdedbae..54da9a985f 100644
--- a/catgets/Makefile
+++ b/catgets/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1996-2020 Free Software Foundation, Inc.
+# Copyright (C) 1996-2021 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/catgets/catgets.c b/catgets/catgets.c
index d4c427139d..0a2ede44b6 100644
--- a/catgets/catgets.c
+++ b/catgets/catgets.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper, <drepper@gnu.org>.
 
diff --git a/catgets/catgetsinfo.h b/catgets/catgetsinfo.h
index 7d9aa94e78..b8d62adadc 100644
--- a/catgets/catgetsinfo.h
+++ b/catgets/catgetsinfo.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>.
 
diff --git a/catgets/gencat.c b/catgets/gencat.c
index f8bc7adbae..ce1801a8ca 100644
--- a/catgets/gencat.c
+++ b/catgets/gencat.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 1996.
 
diff --git a/catgets/nl_types.h b/catgets/nl_types.h
index 8facbda138..eb075bdb18 100644
--- a/catgets/nl_types.h
+++ b/catgets/nl_types.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2021 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/catgets/open_catalog.c b/catgets/open_catalog.c
index cf8d635ae7..7f67cc0564 100644
--- a/catgets/open_catalog.c
+++ b/catgets/open_catalog.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper, <drepper@gnu.org>.
 
diff --git a/catgets/test-gencat.sh b/catgets/test-gencat.sh
index b169468d6b..feed7373c5 100755
--- a/catgets/test-gencat.sh
+++ b/catgets/test-gencat.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 # Test escape character handling in gencat.
-# Copyright (C) 2000-2020 Free Software Foundation, Inc.
+# Copyright (C) 2000-2021 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/catgets/xopen-msg.awk b/catgets/xopen-msg.awk
index 5eb693d93d..f0f3d834de 100644
--- a/catgets/xopen-msg.awk
+++ b/catgets/xopen-msg.awk
@@ -1,5 +1,5 @@
 # xopen-msg.awk - Convert Uniforum style .po file to X/Open style .msg file
-# Copyright (C) 2012-2020 Free Software Foundation, Inc.
+# Copyright (C) 2012-2021 Free Software Foundation, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by