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/nss/nss_compat/compat-grp.c b/nss/nss_compat/compat-grp.c
index dcfc46a..0050f7f 100644
--- a/nss/nss_compat/compat-grp.c
+++ b/nss/nss_compat/compat-grp.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2022 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/nss/nss_compat/compat-initgroups.c b/nss/nss_compat/compat-initgroups.c
index a5d8b23..9cef934 100644
--- a/nss/nss_compat/compat-initgroups.c
+++ b/nss/nss_compat/compat-initgroups.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998-2021 Free Software Foundation, Inc.
+/* Copyright (C) 1998-2022 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/nss/nss_compat/compat-pwd.c b/nss/nss_compat/compat-pwd.c
index 3620879..4e4484e 100644
--- a/nss/nss_compat/compat-pwd.c
+++ b/nss/nss_compat/compat-pwd.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2022 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/nss/nss_compat/compat-spwd.c b/nss/nss_compat/compat-spwd.c
index edabc3c..df871bf 100644
--- a/nss/nss_compat/compat-spwd.c
+++ b/nss/nss_compat/compat-spwd.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2022 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/nss/nss_compat/nisdomain.c b/nss/nss_compat/nisdomain.c
index 838fd95..fc762d7 100644
--- a/nss/nss_compat/nisdomain.c
+++ b/nss/nss_compat/nisdomain.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2017-2021 Free Software Foundation, Inc.
+/* Copyright (C) 2017-2022 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/nss/nss_compat/nisdomain.h b/nss/nss_compat/nisdomain.h
index 576ba44..1b06750 100644
--- a/nss/nss_compat/nisdomain.h
+++ b/nss/nss_compat/nisdomain.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2017-2021 Free Software Foundation, Inc.
+/* Copyright (C) 2017-2022 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