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

43 files changed, 43 insertions, 43 deletions

diff --git a/manual/examples/add.c b/manual/examples/add.c
index ebc9d265b2..3ca6732b3f 100644
--- a/manual/examples/add.c
+++ b/manual/examples/add.c
@@ -1,5 +1,5 @@
 /* Example of a Variadic Function
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/argp-ex1.c b/manual/examples/argp-ex1.c
index 573fb323dd..69ee149b0b 100644
--- a/manual/examples/argp-ex1.c
+++ b/manual/examples/argp-ex1.c
@@ -1,5 +1,5 @@
 /* Argp example #1 -- a minimal program using argp
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/argp-ex2.c b/manual/examples/argp-ex2.c
index eedd2e3fc8..a670014c0a 100644
--- a/manual/examples/argp-ex2.c
+++ b/manual/examples/argp-ex2.c
@@ -1,5 +1,5 @@
 /* Argp example #2 -- a pretty minimal program using argp
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/argp-ex3.c b/manual/examples/argp-ex3.c
index 9401aae91b..56fe838a34 100644
--- a/manual/examples/argp-ex3.c
+++ b/manual/examples/argp-ex3.c
@@ -1,5 +1,5 @@
 /* Argp example #3 -- a program with options and arguments using argp
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/argp-ex4.c b/manual/examples/argp-ex4.c
index 41b0f71371..527461f902 100644
--- a/manual/examples/argp-ex4.c
+++ b/manual/examples/argp-ex4.c
@@ -1,5 +1,5 @@
 /* Argp example #4 -- a program with somewhat more complicated options
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/atexit.c b/manual/examples/atexit.c
index 62e30b235a..c81b6b8542 100644
--- a/manual/examples/atexit.c
+++ b/manual/examples/atexit.c
@@ -1,5 +1,5 @@
 /* Cleanups on Exit
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/db.c b/manual/examples/db.c
index f2e78b890a..94cf2ce8ed 100644
--- a/manual/examples/db.c
+++ b/manual/examples/db.c
@@ -1,5 +1,5 @@
 /* User and Group Database Example
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/dir.c b/manual/examples/dir.c
index df4e9a3caa..e5d55f3e57 100644
--- a/manual/examples/dir.c
+++ b/manual/examples/dir.c
@@ -1,5 +1,5 @@
 /* Simple Program to List a Directory
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/dir2.c b/manual/examples/dir2.c
index 547906181d..3e3e90e2a2 100644
--- a/manual/examples/dir2.c
+++ b/manual/examples/dir2.c
@@ -1,5 +1,5 @@
 /* Simple Program to List a Directory, Mark II
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/execinfo.c b/manual/examples/execinfo.c
index 29a3fafdb4..ad879a60e3 100644
--- a/manual/examples/execinfo.c
+++ b/manual/examples/execinfo.c
@@ -1,5 +1,5 @@
 /* Obtain a backtrace and print it.
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/filecli.c b/manual/examples/filecli.c
index 16a8659c81..c83380ea08 100644
--- a/manual/examples/filecli.c
+++ b/manual/examples/filecli.c
@@ -1,5 +1,5 @@
 /* Example of Reading Datagrams
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/filesrv.c b/manual/examples/filesrv.c
index d6ea33d472..94c9f94215 100644
--- a/manual/examples/filesrv.c
+++ b/manual/examples/filesrv.c
@@ -1,5 +1,5 @@
 /* Datagram Socket Example
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/fmtmsgexpl.c b/manual/examples/fmtmsgexpl.c
index a862d84457..326ea45267 100644
--- a/manual/examples/fmtmsgexpl.c
+++ b/manual/examples/fmtmsgexpl.c
@@ -1,5 +1,5 @@
 /* How to use fmtmsg and addseverity.
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/genpass.c b/manual/examples/genpass.c
index 58c605de3b..6a8ccf93c7 100644
--- a/manual/examples/genpass.c
+++ b/manual/examples/genpass.c
@@ -1,5 +1,5 @@
 /* Encrypting Passwords
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/inetcli.c b/manual/examples/inetcli.c
index 6040b26c92..2c7867eb9b 100644
--- a/manual/examples/inetcli.c
+++ b/manual/examples/inetcli.c
@@ -1,5 +1,5 @@
 /* Byte Stream Socket Example
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/inetsrv.c b/manual/examples/inetsrv.c
index 698041e641..174772d6c0 100644
--- a/manual/examples/inetsrv.c
+++ b/manual/examples/inetsrv.c
@@ -1,5 +1,5 @@
 /* Byte Stream Connection Server Example
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/isockad.c b/manual/examples/isockad.c
index 84eba1c4e8..c09d36194c 100644
--- a/manual/examples/isockad.c
+++ b/manual/examples/isockad.c
@@ -1,5 +1,5 @@
 /* Internet Socket Example using sockaddr_in.
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/longopt.c b/manual/examples/longopt.c
index b26c2f804f..566b747c34 100644
--- a/manual/examples/longopt.c
+++ b/manual/examples/longopt.c
@@ -1,5 +1,5 @@
 /* Example of Parsing Long Options with getopt_long.
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/memopen.c b/manual/examples/memopen.c
index 40f18dfcc1..d66ccd341a 100644
--- a/manual/examples/memopen.c
+++ b/manual/examples/memopen.c
@@ -1,5 +1,5 @@
 /* String Streams
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/memstrm.c b/manual/examples/memstrm.c
index a36a1bc1c6..fb06f70553 100644
--- a/manual/examples/memstrm.c
+++ b/manual/examples/memstrm.c
@@ -1,5 +1,5 @@
 /* open_memstream example.
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/mkdirent.c b/manual/examples/mkdirent.c
index 47431b37bb..edd242a414 100644
--- a/manual/examples/mkdirent.c
+++ b/manual/examples/mkdirent.c
@@ -1,5 +1,5 @@
 /* Example for creating a struct dirent object for use with glob.
-   Copyright (C) 2016-2021 Free Software Foundation, Inc.
+   Copyright (C) 2016-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/mkfsock.c b/manual/examples/mkfsock.c
index 58cc5a2cab..9c2a41d3d7 100644
--- a/manual/examples/mkfsock.c
+++ b/manual/examples/mkfsock.c
@@ -1,5 +1,5 @@
 /* Example of Local-Namespace Sockets
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/mkisock.c b/manual/examples/mkisock.c
index 85f869aca6..686c6b3b8d 100644
--- a/manual/examples/mkisock.c
+++ b/manual/examples/mkisock.c
@@ -1,5 +1,5 @@
 /* Internet Socket Example
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/mygetpass.c b/manual/examples/mygetpass.c
index 0a8f7b4186..0a19c4efe8 100644
--- a/manual/examples/mygetpass.c
+++ b/manual/examples/mygetpass.c
@@ -1,5 +1,5 @@
 /* Reading passphrases manually.
-   Copyright (C) 1991-2021 Free Software Foundation, Inc.
+   Copyright (C) 1991-2022 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
diff --git a/manual/examples/ofdlocks.c b/manual/examples/ofdlocks.c
index 1381678121..4f01f41220 100644
--- a/