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/sysdeps/mach/i386/bits/mach/param.h b/sysdeps/mach/i386/bits/mach/param.h
index e810f77a81..4d7d236d24 100644
--- a/sysdeps/mach/i386/bits/mach/param.h
+++ b/sysdeps/mach/i386/bits/mach/param.h
@@ -1,5 +1,5 @@
 /* Old-style Unix parameters and limits.  i386 Mach version.
-   Copyright (C) 1993-2021 Free Software Foundation, Inc.
+   Copyright (C) 1993-2022 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/sysdeps/mach/i386/machine-lock.h b/sysdeps/mach/i386/machine-lock.h
index ea0f878a1a..8ee33c6d0d 100644
--- a/sysdeps/mach/i386/machine-lock.h
+++ b/sysdeps/mach/i386/machine-lock.h
@@ -1,5 +1,5 @@
 /* Machine-specific definition for spin locks.  i386 version.
-   Copyright (C) 1994-2021 Free Software Foundation, Inc.
+   Copyright (C) 1994-2022 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/sysdeps/mach/i386/machine-sp.h b/sysdeps/mach/i386/machine-sp.h
index 54b2a16c01..a7f5fc31e4 100644
--- a/sysdeps/mach/i386/machine-sp.h
+++ b/sysdeps/mach/i386/machine-sp.h
@@ -1,5 +1,5 @@
 /* Machine-specific function to return the stack pointer.  i386 version.
-   Copyright (C) 1994-2021 Free Software Foundation, Inc.
+   Copyright (C) 1994-2022 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/sysdeps/mach/i386/syscall.S b/sysdeps/mach/i386/syscall.S
index 6f2e6b38bc..a83defa63f 100644
--- a/sysdeps/mach/i386/syscall.S
+++ b/sysdeps/mach/i386/syscall.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993-2021 Free Software Foundation, Inc.
+/* Copyright (C) 1993-2022 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/sysdeps/mach/i386/sysdep.h b/sysdeps/mach/i386/sysdep.h
index 5523a8b5f2..48c2a1cae1 100644
--- a/sysdeps/mach/i386/sysdep.h
+++ b/sysdeps/mach/i386/sysdep.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.
 
diff --git a/sysdeps/mach/i386/thread_state.h b/sysdeps/mach/i386/thread_state.h
index 022b19d04b..b560f427e5 100644
--- a/sysdeps/mach/i386/thread_state.h
+++ b/sysdeps/mach/i386/thread_state.h
@@ -1,5 +1,5 @@
 /* Mach thread state definitions for machine-independent code.  i386 version.
-   Copyright (C) 1994-2021 Free Software Foundation, Inc.
+   Copyright (C) 1994-2022 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