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 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master

43 files changed, 43 insertions, 43 deletions

diff --git a/manual/examples/add.c b/manual/examples/add.c
index 20d64d4..ebc9d26 100644
--- a/manual/examples/add.c
+++ b/manual/examples/add.c
@@ -1,5 +1,5 @@
 /* Example of a Variadic Function
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 a13dd41..573fb32 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) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 a8055db..eedd2e3 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) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 42b5cb4..9401aae 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) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 84fdaed..41b0f71 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) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 02c9784..62e30b2 100644
--- a/manual/examples/atexit.c
+++ b/manual/examples/atexit.c
@@ -1,5 +1,5 @@
 /* Cleanups on Exit
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 b061fce..f2e78b8 100644
--- a/manual/examples/db.c
+++ b/manual/examples/db.c
@@ -1,5 +1,5 @@
 /* User and Group Database Example
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 a7bf53f..df4e9a3 100644
--- a/manual/examples/dir.c
+++ b/manual/examples/dir.c
@@ -1,5 +1,5 @@
 /* Simple Program to List a Directory
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 f314dde..5479061 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) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 3cedf7f..29a3faf 100644
--- a/manual/examples/execinfo.c
+++ b/manual/examples/execinfo.c
@@ -1,5 +1,5 @@
 /* Obtain a backtrace and print it.
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 e811c94..16a8659 100644
--- a/manual/examples/filecli.c
+++ b/manual/examples/filecli.c
@@ -1,5 +1,5 @@
 /* Example of Reading Datagrams
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 f38f547..d6ea33d 100644
--- a/manual/examples/filesrv.c
+++ b/manual/examples/filesrv.c
@@ -1,5 +1,5 @@
 /* Datagram Socket Example
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 a732227..a862d84 100644
--- a/manual/examples/fmtmsgexpl.c
+++ b/manual/examples/fmtmsgexpl.c
@@ -1,5 +1,5 @@
 /* How to use fmtmsg and addseverity.
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 5bac269..58c605d 100644
--- a/manual/examples/genpass.c
+++ b/manual/examples/genpass.c
@@ -1,5 +1,5 @@
 /* Encrypting Passwords
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 a5a715b..6040b26 100644
--- a/manual/examples/inetcli.c
+++ b/manual/examples/inetcli.c
@@ -1,5 +1,5 @@
 /* Byte Stream Socket Example
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 391a462..698041e 100644
--- a/manual/examples/inetsrv.c
+++ b/manual/examples/inetsrv.c
@@ -1,5 +1,5 @@
 /* Byte Stream Connection Server Example
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 efdc52e..84eba1c 100644
--- a/manual/examples/isockad.c
+++ b/manual/examples/isockad.c
@@ -1,5 +1,5 @@
 /* Internet Socket Example using sockaddr_in.
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 40bad26..b26c2f8 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) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 e840828..40f18df 100644
--- a/manual/examples/memopen.c
+++ b/manual/examples/memopen.c
@@ -1,5 +1,5 @@
 /* String Streams
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 3c427f9..a36a1bc 100644
--- a/manual/examples/memstrm.c
+++ b/manual/examples/memstrm.c
@@ -1,5 +1,5 @@
 /* open_memstream example.
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 0a76076..47431b3 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) 2016-2020 Free Software Foundation, Inc.
+   Copyright (C) 2016-2021 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 c7777b9..58cc5a2 100644
--- a/manual/examples/mkfsock.c
+++ b/manual/examples/mkfsock.c
@@ -1,5 +1,5 @@
 /* Example of Local-Namespace Sockets
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 a1b8fc7..85f869a 100644
--- a/manual/examples/mkisock.c
+++ b/manual/examples/mkisock.c
@@ -1,5 +1,5 @@
 /* Internet Socket Example
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 a93ad05..0a8f7b4 100644
--- a/manual/examples/mygetpass.c
+++ b/manual/examples/mygetpass.c
@@ -1,5 +1,5 @@
 /* Reading passphrases manually.
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 0244e5f..1381678 100644
--- a/manual/examples/ofdlocks.c
+++ b/manual/examples/ofdlocks.c
@@ -1,5 +1,5 @@
 /* Open File Description Locks Usage Example
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/pipe.c b/manual/examples/pipe.c
index 68a7789..21e43d4 100644
--- a/manual/examples/pipe.c
+++ b/manual/examples/pipe.c
@@ -1,5 +1,5 @@
 /* Creating a Pipe
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/popen.c b/manual/examples/popen.c
index aca4249..12e0869 100644
--- a/manual/examples/popen.c
+++ b/manual/examples/popen.c
@@ -1,5 +1,5 @@
 /* Pipe to a Subprocess
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/rprintf.c b/manual/examples/rprintf.c
index 5507bc6..b1694b2 100644
--- a/manual/examples/rprintf.c
+++ b/manual/examples/rprintf.c
@@ -1,5 +1,5 @@
 /* Printf Extension Example
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/search.c b/manual/examples/search.c
index 9fbda7c..85ec872 100644
--- a/manual/examples/search.c
+++ b/manual/examples/search.c
@@ -1,5 +1,5 @@
 /* Searching and Sorting Example
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/select.c b/manual/examples/select.c
index 4758127..a927112 100644
--- a/manual/examples/select.c
+++ b/manual/examples/select.c
@@ -1,5 +1,5 @@
 /* Waiting for Input or Output
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/setjmp.c b/manual/examples/setjmp.c
index d785d83..136ebae 100644
--- a/manual/examples/setjmp.c
+++ b/manual/examples/setjmp.c
@@ -1,5 +1,5 @@
 /* Introduction to Non-Local Exits
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/sigh1.c b/manual/examples/sigh1.c
index 5a006df..da7cba8 100644
--- a/manual/examples/sigh1.c
+++ b/manual/examples/sigh1.c
@@ -1,5 +1,5 @@
 /* Signal Handlers that Return
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/sigusr.c b/manual/examples/sigusr.c
index 0485bc1..ee5e935 100644
--- a/manual/examples/sigusr.c
+++ b/manual/examples/sigusr.c
@@ -1,5 +1,5 @@
 /* Using kill for Communication
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/stpcpy.c b/manual/examples/stpcpy.c
index 4ce29a3..bea8018 100644
--- a/manual/examples/stpcpy.c
+++ b/manual/examples/stpcpy.c
@@ -1,5 +1,5 @@
 /* stpcpy example.
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/strdupa.c b/manual/examples/strdupa.c
index f5e64f7..d342dd5 100644
--- a/manual/examples/strdupa.c
+++ b/manual/examples/strdupa.c
@@ -1,5 +1,5 @@
 /* strdupa example.
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/strftim.c b/manual/examples/strftim.c
index 6aaafbe..262804a 100644
--- a/manual/examples/strftim.c
+++ b/manual/examples/strftim.c
@@ -1,5 +1,5 @@
 /* Time Functions Example
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/subopt.c b/manual/examples/subopt.c
index 79995bc..5b7bb31 100644
--- a/manual/examples/subopt.c
+++ b/manual/examples/subopt.c
@@ -1,5 +1,5 @@
 /* Parsing of Suboptions Example
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/swapcontext.c b/manual/examples/swapcontext.c
index b2b932c..fbbe2c7 100644
--- a/manual/examples/swapcontext.c
+++ b/manual/examples/swapcontext.c
@@ -1,5 +1,5 @@
 /* Complete Context Control
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/termios.c b/manual/examples/termios.c
index e2654cc..c345c2d 100644
--- a/manual/examples/termios.c
+++ b/manual/examples/termios.c
@@ -1,5 +1,5 @@
 /* Noncanonical Mode Example
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/testopt.c b/manual/examples/testopt.c
index b1eb0ab..de31bc2 100644
--- a/manual/examples/testopt.c
+++ b/manual/examples/testopt.c
@@ -1,5 +1,5 @@
 /* Example of Parsing Arguments with getopt.
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/testpass.c b/manual/examples/testpass.c
index b0da4a6..f8a58b2 100644
--- a/manual/examples/testpass.c
+++ b/manual/examples/testpass.c
@@ -1,5 +1,5 @@
 /* Verify a passphrase.
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/timeval_subtract.c b/manual/examples/timeval_subtract.c
index 8c7f16b..37c7922 100644
--- a/manual/examples/timeval_subtract.c
+++ b/manual/examples/timeval_subtract.c
@@ -1,5 +1,5 @@
 /* struct timeval subtraction.
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/twalk.c b/manual/examples/twalk.c
index b89db3c..9d46c00 100644
--- a/manual/examples/twalk.c
+++ b/manual/examples/twalk.c
@@ -1,5 +1,5 @@
 /* Implement twalk using twalk_r.
-   Copyright (C) 2019-2020 Free Software Foundation, Inc.
+   Copyright (C) 2019-2021 Free Software Foundation, Inc.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public