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_db/db-XXX.c b/nss/nss_db/db-XXX.c
index 5434524fff..224737a064 100644
--- a/nss/nss_db/db-XXX.c
+++ b/nss/nss_db/db-XXX.c
@@ -1,5 +1,5 @@
 /* Common code for DB-based databases in nss_db module.
-   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_db/db-init.c b/nss/nss_db/db-init.c
index e2071d0d60..f69a61afb9 100644
--- a/nss/nss_db/db-init.c
+++ b/nss/nss_db/db-init.c
@@ -1,5 +1,5 @@
 /* Initialization in nss_db module.
-   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+   Copyright (C) 2011-2022 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_db/db-initgroups.c b/nss/nss_db/db-initgroups.c
index 1e93f7911f..6a7f2deb41 100644
--- a/nss/nss_db/db-initgroups.c
+++ b/nss/nss_db/db-initgroups.c
@@ -1,5 +1,5 @@
 /* Initgroups handling in nss_db module.
-   Copyright (C) 2011-2021 Free Software Foundation, Inc.
+   Copyright (C) 2011-2022 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_db/db-netgrp.c b/nss/nss_db/db-netgrp.c
index 268a3232cb..ef242ef8cd 100644
--- a/nss/nss_db/db-netgrp.c
+++ b/nss/nss_db/db-netgrp.c
@@ -1,5 +1,5 @@
 /* Netgroup file parser in nss_db modules.
-   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_db/db-open.c b/nss/nss_db/db-open.c
index 35b7e4e991..6abfba35e7 100644
--- a/nss/nss_db/db-open.c
+++ b/nss/nss_db/db-open.c
@@ -1,5 +1,5 @@
 /* Common database routines for nss_db.
-   Copyright (C) 2000-2021 Free Software Foundation, Inc.
+   Copyright (C) 2000-2022 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_db/nss_db.h b/nss/nss_db/nss_db.h
index 7067b1bdd4..26f23f5e3e 100644
--- a/nss/nss_db/nss_db.h
+++ b/nss/nss_db/nss_db.h
@@ -1,5 +1,5 @@
 /* Common database open/close routines for nss_db.
-   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