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

14 files changed, 14 insertions, 14 deletions

diff --git a/termios/Makefile b/termios/Makefile
index 23acbc8..c555619 100644
--- a/termios/Makefile
+++ b/termios/Makefile
@@ -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/termios/cfmakeraw.c b/termios/cfmakeraw.c
index 2200f8b..5defe1a 100644
--- a/termios/cfmakeraw.c
+++ b/termios/cfmakeraw.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2021 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/termios/cfsetspeed.c b/termios/cfsetspeed.c
index 9ff5071..b78d693 100644
--- a/termios/cfsetspeed.c
+++ b/termios/cfsetspeed.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1992-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1992-2021 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/termios/speed.c b/termios/speed.c
index 5abfb4c..86f635d 100644
--- a/termios/speed.c
+++ b/termios/speed.c
@@ -1,5 +1,5 @@
 /* `struct termios' speed frobnication functions.  4.4 BSD/generic GNU 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/termios/tcdrain.c b/termios/tcdrain.c
index 232c776..bb67bcc 100644
--- a/termios/tcdrain.c
+++ b/termios/tcdrain.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/termios/tcflow.c b/termios/tcflow.c
index c1491d3..f5bb48a 100644
--- a/termios/tcflow.c
+++ b/termios/tcflow.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/termios/tcflush.c b/termios/tcflush.c
index 36d68f4..111f7d5 100644
--- a/termios/tcflush.c
+++ b/termios/tcflush.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/termios/tcgetattr.c b/termios/tcgetattr.c
index f9d9ad6..b920467 100644
--- a/termios/tcgetattr.c
+++ b/termios/tcgetattr.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/termios/tcgetpgrp.c b/termios/tcgetpgrp.c
index 1444c34..1717692 100644
--- a/termios/tcgetpgrp.c
+++ b/termios/tcgetpgrp.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/termios/tcgetsid.c b/termios/tcgetsid.c
index e154eda..7199190 100644
--- a/termios/tcgetsid.c
+++ b/termios/tcgetsid.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1997-2021 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/termios/tcsendbrk.c b/termios/tcsendbrk.c
index 2a5cccd..47846c2 100644
--- a/termios/tcsendbrk.c
+++ b/termios/tcsendbrk.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/termios/tcsetattr.c b/termios/tcsetattr.c
index 112e16d..3cab72f 100644
--- a/termios/tcsetattr.c
+++ b/termios/tcsetattr.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/termios/tcsetpgrp.c b/termios/tcsetpgrp.c
index 79df794..05630cd 100644
--- a/termios/tcsetpgrp.c
+++ b/termios/tcsetpgrp.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/termios/termios.h b/termios/termios.h
index 41cd79b..8e05973 100644
--- a/termios/termios.h
+++ b/termios/termios.h
@@ -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