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

21 files changed, 21 insertions, 21 deletions

diff --git a/sysdeps/mach/hurd/i386/____longjmp_chk.S b/sysdeps/mach/hurd/i386/____longjmp_chk.S
index a746a4f..9a02da2 100644
--- a/sysdeps/mach/hurd/i386/____longjmp_chk.S
+++ b/sysdeps/mach/hurd/i386/____longjmp_chk.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2001-2021 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/hurd/i386/__longjmp.S b/sysdeps/mach/hurd/i386/__longjmp.S
index af788ed..d558c0c 100644
--- a/sysdeps/mach/hurd/i386/__longjmp.S
+++ b/sysdeps/mach/hurd/i386/__longjmp.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2001-2021 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/hurd/i386/bits/sigcontext.h b/sysdeps/mach/hurd/i386/bits/sigcontext.h
index 2849059..fd1fdbb 100644
--- a/sysdeps/mach/hurd/i386/bits/sigcontext.h
+++ b/sysdeps/mach/hurd/i386/bits/sigcontext.h
@@ -1,5 +1,5 @@
 /* Machine-dependent signal context structure for GNU Hurd.  i386 version.
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/hurd/i386/exc2signal.c b/sysdeps/mach/hurd/i386/exc2signal.c
index 7a22260..d9a8b4f 100644
--- a/sysdeps/mach/hurd/i386/exc2signal.c
+++ b/sysdeps/mach/hurd/i386/exc2signal.c
@@ -1,5 +1,5 @@
 /* Translate Mach exception codes into signal numbers.  i386 version.
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/hurd/i386/getcontext.S b/sysdeps/mach/hurd/i386/getcontext.S
index ad6cbf8..940176d 100644
--- a/sysdeps/mach/hurd/i386/getcontext.S
+++ b/sysdeps/mach/hurd/i386/getcontext.S
@@ -1,5 +1,5 @@
 /* Save current context.
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
 
diff --git a/sysdeps/mach/hurd/i386/htl/pt-machdep.c b/sysdeps/mach/hurd/i386/htl/pt-machdep.c
index 2f4c466..090fcd2 100644
--- a/sysdeps/mach/hurd/i386/htl/pt-machdep.c
+++ b/sysdeps/mach/hurd/i386/htl/pt-machdep.c
@@ -1,5 +1,5 @@
 /* Machine dependent pthreads code.  Hurd/i386 version.
-   Copyright (C) 2000-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 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/hurd/i386/htl/pt-setup.c b/sysdeps/mach/hurd/i386/htl/pt-setup.c
index d543d4c..64a6293 100644
--- a/sysdeps/mach/hurd/i386/htl/pt-setup.c
+++ b/sysdeps/mach/hurd/i386/htl/pt-setup.c
@@ -1,5 +1,5 @@
 /* Setup thread stack.  Hurd/i386 version.
-   Copyright (C) 2000-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 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/hurd/i386/init-first.c b/sysdeps/mach/hurd/i386/init-first.c
index cbbc122..a430aae 100644
--- a/sysdeps/mach/hurd/i386/init-first.c
+++ b/sysdeps/mach/hurd/i386/init-first.c
@@ -1,5 +1,5 @@
 /* Initialization code run first thing by the ELF startup code.  For i386/Hurd.
-   Copyright (C) 1995-2020 Free Software Foundation, Inc.
+   Copyright (C) 1995-2021 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/hurd/i386/intr-msg.h b/sysdeps/mach/hurd/i386/intr-msg.h
index 70e6cc6..bd94aaf 100644
--- a/sysdeps/mach/hurd/i386/intr-msg.h
+++ b/sysdeps/mach/hurd/i386/intr-msg.h
@@ -1,5 +1,5 @@
 /* Machine-dependent details of interruptible RPC messaging.  i386 version.
-   Copyright (C) 1995-2020 Free Software Foundation, Inc.
+   Copyright (C) 1995-2021 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/hurd/i386/ioperm.c b/sysdeps/mach/hurd/i386/ioperm.c
index a804245..e4b5ea3 100644
--- a/sysdeps/mach/hurd/i386/ioperm.c
+++ b/sysdeps/mach/hurd/i386/ioperm.c
@@ -1,5 +1,5 @@
 /* Access to hardware i/o ports.  Hurd/x86 version.
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 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/hurd/i386/longjmp-ts.c b/sysdeps/mach/hurd/i386/longjmp-ts.c
index f43b25d..3af4c0f 100644
--- a/sysdeps/mach/hurd/i386/longjmp-ts.c
+++ b/sysdeps/mach/hurd/i386/longjmp-ts.c
@@ -1,5 +1,5 @@
 /* Perform a `longjmp' on a Mach thread_state.  i386 version.
-   Copyright (C) 1991-2020 Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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/hurd/i386/makecontext.S b/sysdeps/mach/hurd/i386/makecontext.S
index ad9ce5f..33c9660 100644
--- a/sysdeps/mach/hurd/i386/makecontext.S
+++ b/sysdeps/mach/hurd/i386/makecontext.S
@@ -1,5 +1,5 @@
 /* Create new context.
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
 
diff --git a/sysdeps/mach/hurd/i386/setcontext.S b/sysdeps/mach/hurd/i386/setcontext.S
index 68cee53..99995d6 100644
--- a/sysdeps/mach/hurd/i386/setcontext.S
+++ b/sysdeps/mach/hurd/i386/setcontext.S
@@ -1,5 +1,5 @@
 /* Install given context.
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
 
diff --git a/sysdeps/mach/hurd/i386/sigcontextinfo.h b/sysdeps/mach/hurd/i386/sigcontextinfo.h
index 59989e9..7e62f2f 100644
--- a/sysdeps/mach/hurd/i386/sigcontextinfo.h
+++ b/sysdeps/mach/hurd/i386/sigcontextinfo.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1998-2021 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/hurd/i386/sigreturn.c b/sysdeps/mach/hurd/i386/sigreturn.c
index b56bf1b..f3f7cec 100644
--- a/sysdeps/mach/hurd/i386/sigreturn.c
+++ b/sysdeps/mach/hurd/i386/sigreturn.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2021 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/hurd/i386/static-start.S b/sysdeps/mach/hurd/i386/static-start.S
index ecba16a7..c7ae833 100644
--- a/sysdeps/mach/hurd/i386/static-start.S
+++ b/sysdeps/mach/hurd/i386/static-start.S
@@ -1,5 +1,5 @@
 /* Startup code for statically linked Hurd/i386 binaries.
-   Copyright (C) 1998-2020 Free Software Foundation, Inc.
+   Copyright (C) 1998-2021 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/hurd/i386/swapcontext.S b/sysdeps/mach/hurd/i386/swapcontext.S
index 852cfe8..84eaecf 100644
--- a/sysdeps/mach/hurd/i386/swapcontext.S
+++ b/sysdeps/mach/hurd/i386/swapcontext.S
@@ -1,5 +1,5 @@
 /* Save current context and install the given one.
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
 
diff --git a/sysdeps/mach/hurd/i386/sys/io.h b/sysdeps/mach/hurd/i386/sys/io.h
index cd6bd27..98a6585 100644
--- a/sysdeps/mach/hurd/i386/sys/io.h
+++ b/sysdeps/mach/hurd/i386/sys/io.h
@@ -1,5 +1,5 @@
 /* Access to hardware i/o ports.  GNU/x86 version.
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 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/hurd/i386/tls.h b/sysdeps/mach/hurd/i386/tls.h
index 97d0b1c..057b261 100644
--- a/sysdeps/mach/hurd/i386/tls.h
+++ b/sysdeps/mach/hurd/i386/tls.h
@@ -1,5 +1,5 @@
 /* Definitions for thread-local data handling.  Hurd/i386 version.
-   Copyright (C) 2003-2020 Free Software Foundation, Inc.
+   Copyright (C) 2003-2021 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/hurd/i386/trampoline.c b/sysdeps/mach/hurd/i386/trampoline.c
index a47bbe9..cf58d0c 100644
--- a/sysdeps/mach/hurd/i386/trampoline.c
+++ b/sysdeps/mach/hurd/i386/trampoline.c
@@ -1,5 +1,5 @@
 /* Set thread_state for sighandler, and sigcontext to recover.  i386 version.
-   Copyright (C) 1994-2020 Free Software Foundation, Inc.
+   Copyright (C) 1994-2021 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/hurd/i386/vm_param.h b/sysdeps/mach/hurd/i386/vm_param.h
index 96230bc..5869b40 100644
--- a/sysdeps/mach/hurd/i386/vm_param.h
+++ b/sysdeps/mach/hurd/i386/vm_param.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2020 Free Software Foundation, Inc.
+/* Copyright (C) 2020-2021 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