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

10 files changed, 10 insertions, 10 deletions

diff --git a/ctype/Makefile b/ctype/Makefile
index e8b5684..ea121fe 100644
--- a/ctype/Makefile
+++ b/ctype/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/ctype/ctype-c99.c b/ctype/ctype-c99.c
index 2f69ccc..099d80a 100644
--- a/ctype/ctype-c99.c
+++ b/ctype/ctype-c99.c
@@ -1,5 +1,5 @@
 /* External function version of isblank.
-   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/ctype/ctype-c99_l.c b/ctype/ctype-c99_l.c
index b0e8cce..b618b74 100644
--- a/ctype/ctype-c99_l.c
+++ b/ctype/ctype-c99_l.c
@@ -1,5 +1,5 @@
 /* External function version of isblank_l.
-   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/ctype/ctype-extn.c b/ctype/ctype-extn.c
index 5d2a7e3..8350050 100644
--- a/ctype/ctype-extn.c
+++ b/ctype/ctype-extn.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/ctype/ctype-info.c b/ctype/ctype-info.c
index 783cad1..e226f95 100644
--- a/ctype/ctype-info.c
+++ b/ctype/ctype-info.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/ctype/ctype.c b/ctype/ctype.c
index 8c89933..423c0a5 100644
--- a/ctype/ctype.c
+++ b/ctype/ctype.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/ctype/ctype.h b/ctype/ctype.h
index 86f2bcc..eee1dcc 100644
--- a/ctype/ctype.h
+++ b/ctype/ctype.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/ctype/ctype_l.c b/ctype/ctype_l.c
index 8c1830f..b34d7cb 100644
--- a/ctype/ctype_l.c
+++ b/ctype/ctype_l.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/ctype/isctype.c b/ctype/isctype.c
index 36b047b..dd6ca32 100644
--- a/ctype/isctype.c
+++ b/ctype/isctype.c
@@ -1,4 +1,4 @@
-/* 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/ctype/test_ctype.c b/ctype/test_ctype.c
index 1cb65e5..5791dbd 100644
--- a/ctype/test_ctype.c
+++ b/ctype/test_ctype.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