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

52 files changed, 52 insertions, 52 deletions

diff --git a/signal/Makefile b/signal/Makefile
index 99889a53a4..467c9423e7 100644
--- a/signal/Makefile
+++ b/signal/Makefile
@@ -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/signal/allocrtsig.c b/signal/allocrtsig.c
index 12a0f7fca5..ce139594db 100644
--- a/signal/allocrtsig.c
+++ b/signal/allocrtsig.c
@@ -1,5 +1,5 @@
 /* Handle real-time signal allocation.  Generic version.
-   Copyright (C) 1997-2021 Free Software Foundation, Inc.
+   Copyright (C) 1997-2022 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/signal/bits/types/__sigval_t.h b/signal/bits/types/__sigval_t.h
index 0737bf9630..5746ab97da 100644
--- a/signal/bits/types/__sigval_t.h
+++ b/signal/bits/types/__sigval_t.h
@@ -1,5 +1,5 @@
 /* Define __sigval_t.
-   Copyright (C) 1997-2021 Free Software Foundation, Inc.
+   Copyright (C) 1997-2022 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/signal/bits/types/struct_sigstack.h b/signal/bits/types/struct_sigstack.h
index 6500c0143a..4190c779e6 100644
--- a/signal/bits/types/struct_sigstack.h
+++ b/signal/bits/types/struct_sigstack.h
@@ -1,5 +1,5 @@
 /* Define struct sigstack.
-   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/signal/kill.c b/signal/kill.c
index d0f2e8662c..e8d7353d00 100644
--- a/signal/kill.c
+++ b/signal/kill.c
@@ -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/signal/killpg.c b/signal/killpg.c
index f6ca38aaad..96635e5a93 100644
--- a/signal/killpg.c
+++ b/signal/killpg.c
@@ -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/signal/libc_sigaction.c b/signal/libc_sigaction.c
index c25913b9bd..6cdb4ce4ac 100644
--- a/signal/libc_sigaction.c
+++ b/signal/libc_sigaction.c
@@ -1,5 +1,5 @@
 /* Internal sigaction definitions.
-   Copyright (C) 2021 Free Software Foundation, Inc.
+   Copyright (C) 2021-2022 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/signal/raise.c b/signal/raise.c
index 2997da0dde..c1c46a356b 100644
--- a/signal/raise.c
+++ b/signal/raise.c
@@ -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/signal/sigaction.c b/signal/sigaction.c
index 8d9f755ccc..8e94b9a10b 100644
--- a/signal/sigaction.c
+++ b/signal/sigaction.c
@@ -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/signal/sigaddset.c b/signal/sigaddset.c
index f1e8941ef7..c6ef0a953a 100644
--- a/signal/sigaddset.c
+++ b/signal/sigaddset.c
@@ -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/signal/sigaltstack.c b/signal/sigaltstack.c
index e152439237..fd9d8dc1ec 100644
--- a/signal/sigaltstack.c
+++ b/signal/sigaltstack.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992-2021 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2022 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/signal/sigandset.c b/signal/sigandset.c
index cbebf930bf..91dcab36cc 100644
--- a/signal/sigandset.c
+++ b/signal/sigandset.c
@@ -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/signal/sigblock.c b/signal/sigblock.c
index 36a9a63717..04b46ca03f 100644
--- a/signal/sigblock.c
+++ b/signal/sigblock.c
@@ -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/signal/sigdelset.c b/signal/sigdelset.c
index 74b6413b14..81bb9a908a 100644
--- a/signal/sigdelset.c
+++ b/signal/sigdelset.c
@@ -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/signal/sigempty.c b/signal/sigempty.c
index a94bdac8a1..559b4b1fd4 100644
--- a/signal/sigempty.c
+++ b/signal/sigempty.c
@@ -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/signal/sigfillset.c b/signal/sigfillset.c
index 2a673d2ad4..b52ef06aa0 100644
--- a/signal/sigfillset.c
+++ b/signal/sigfillset.c
@@ -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/signal/siggetmask.c b/signal/siggetmask.c
index 3be9efdf20..553f4e15b1 100644
--- a/signal/siggetmask.c
+++ b/signal/siggetmask.c
@@ -1,5 +1,5 @@
 /* siggetmask -- useless alias for `sigblock (0)' for old Linux compatibility.
-   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/signal/sighold.c b/signal/sighold.c
index b62c12e055..1934418f14 100644
--- a/signal/sighold.c
+++ b/signal/sighold.c
@@ -1,5 +1,5 @@
 /* Add SIG to the calling process' signal mask.
-   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/signal/sigignore.c b/signal/sigignore.c
index 0aa5c66946..cbb565217e 100644
--- a/signal/sigignore.c
+++ b/signal/sigignore.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/signal/sigintr.c b/signal/sigintr.c
index 22bbdf38c0..62bdcfc050 100644
--- a/signal/sigintr.c
+++ b/signal/sigintr.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992-2021 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2022 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/signal/sigisempty.c b/signal/sigisempty.c
index b2ac01de59..27ac293aad 100644
--- a/signal/sigisempty.c
+++ b/signal/sigisempty.c
@@ -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/signal/sigismem.c b/signal/sigismem.c
index c38856b96c..f1cec4cb22 100644
--- a/signal/sigismem.c
+++ b/signal/sigismem.c
@@ -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/signal/signal.c b/signal/signal.c
index b7c5c7e6cc..0ed590da1c 100644
--- a/signal/signal.c
+++ b/signal/signal.c
@@ -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/signal/signal.h b/signal/signal.h
index 5fd93382fc..78d0d819aa 100644
--- a/signal/signal.h
+++ b/signal/signal.h
@@ -1,4 +1,4 @@
-/* Copyr