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

8 files changed, 8 insertions, 8 deletions

diff --git a/posix/bits/cpu-set.h b/posix/bits/cpu-set.h
index 9a7e559..afc1622 100644
--- a/posix/bits/cpu-set.h
+++ b/posix/bits/cpu-set.h
@@ -1,6 +1,6 @@
 /* Definition of the cpu_set_t structure used by the POSIX 1003.1b-1993
    scheduling interface.
-   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/posix/bits/getopt_core.h b/posix/bits/getopt_core.h
index 1751a20..31a2586 100644
--- a/posix/bits/getopt_core.h
+++ b/posix/bits/getopt_core.h
@@ -1,5 +1,5 @@
 /* Declarations for getopt (basic, portable features only).
-   Copyright (C) 1989-2021 Free Software Foundation, Inc.
+   Copyright (C) 1989-2022 Free Software Foundation, Inc.
    This file is part of the GNU C Library and is also part of gnulib.
    Patches to this file should be submitted to both projects.
 
diff --git a/posix/bits/getopt_ext.h b/posix/bits/getopt_ext.h
index d48069e..89cb124 100644
--- a/posix/bits/getopt_ext.h
+++ b/posix/bits/getopt_ext.h
@@ -1,5 +1,5 @@
 /* Declarations for getopt (GNU extensions).
-   Copyright (C) 1989-2021 Free Software Foundation, Inc.
+   Copyright (C) 1989-2022 Free Software Foundation, Inc.
    This file is part of the GNU C Library and is also part of gnulib.
    Patches to this file should be submitted to both projects.
 
diff --git a/posix/bits/getopt_posix.h b/posix/bits/getopt_posix.h
index f49e1f3..ece117a 100644
--- a/posix/bits/getopt_posix.h
+++ b/posix/bits/getopt_posix.h
@@ -1,5 +1,5 @@
 /* Declarations for getopt (POSIX compatibility shim).
-   Copyright (C) 1989-2021 Free Software Foundation, Inc.
+   Copyright (C) 1989-2022 Free Software Foundation, Inc.
    Unlike the bulk of the getopt implementation, this file is NOT part
    of gnulib.
 
diff --git a/posix/bits/posix1_lim.h b/posix/bits/posix1_lim.h
index c645847..153d5d3 100644
--- a/posix/bits/posix1_lim.h
+++ b/posix/bits/posix1_lim.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2021 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2022 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/posix/bits/posix2_lim.h b/posix/bits/posix2_lim.h
index 7ac13cb..0dd5230 100644
--- a/posix/bits/posix2_lim.h
+++ b/posix/bits/posix2_lim.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2021 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2022 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/posix/bits/types.h b/posix/bits/types.h
index 2dc63de..f912e77 100644
--- a/posix/bits/types.h
+++ b/posix/bits/types.h
@@ -1,5 +1,5 @@
 /* bits/types.h -- definitions of __*_t types underlying *_t types.
-   Copyright (C) 2002-2021 Free Software Foundation, Inc.
+   Copyright (C) 2002-2022 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/posix/bits/unistd.h b/posix/bits/unistd.h
index 697dcbb..01df84b 100644
--- a/posix/bits/unistd.h
+++ b/posix/bits/unistd.h
@@ -1,5 +1,5 @@
 /* Checking macros for unistd functions.
-   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+   Copyright (C) 2005-2022 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