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 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines

6 files changed, 6 insertions, 6 deletions

diff --git a/conform/Makefile b/conform/Makefile
index 27ad98caf8..73123f82af 100644
--- a/conform/Makefile
+++ b/conform/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1999-2021 Free Software Foundation, Inc.
+# Copyright (C) 1999-2022 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/conform/check-header-lists.sh b/conform/check-header-lists.sh
index 5497bfdf41..0db048f618 100755
--- a/conform/check-header-lists.sh
+++ b/conform/check-header-lists.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 # Check the set of headers with conformtest expectations for a given standard.
-# Copyright (C) 2014-2021 Free Software Foundation, Inc.
+# Copyright (C) 2014-2022 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/conform/conformtest.py b/conform/conformtest.py
index 164cf2917d..94a7ee110f 100644
--- a/conform/conformtest.py
+++ b/conform/conformtest.py
@@ -1,6 +1,6 @@
 #!/usr/bin/python3
 # Check header contents against the given standard.
-# Copyright (C) 2018-2021 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022 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/conform/glibcconform.py b/conform/glibcconform.py
index 7990e12799..9d843356be 100644
--- a/conform/glibcconform.py
+++ b/conform/glibcconform.py
@@ -1,6 +1,6 @@
 #!/usr/bin/python3
 # Shared code for glibc conformance tests.
-# Copyright (C) 2018-2021 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022 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/conform/linknamespace.py b/conform/linknamespace.py
index 66b16e244a..f7fe3a7a0a 100644
--- a/conform/linknamespace.py
+++ b/conform/linknamespace.py
@@ -2,7 +2,7 @@
 # Check that use of symbols declared in a given header does not result
 # in any symbols being brought in that are not reserved with external
 # linkage for the given standard.
-# Copyright (C) 2014-2021 Free Software Foundation, Inc.
+# Copyright (C) 2014-2022 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/conform/list-header-symbols.py b/conform/list-header-symbols.py
index ba6de25472..f74bb06464 100644
--- a/conform/list-header-symbols.py
+++ b/conform/list-header-symbols.py
@@ -1,7 +1,7 @@
 #!/usr/bin/python3
 # Print a list of symbols exported by some headers that would
 # otherwise be in the user's namespace.
-# Copyright (C) 2018-2021 Free Software Foundation, Inc.
+# Copyright (C) 2018-2022 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