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

13 files changed, 13 insertions, 13 deletions

diff --git a/shadow/Makefile b/shadow/Makefile
index d0abddff37..641e015cfa 100644
--- a/shadow/Makefile
+++ b/shadow/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1996-2020 Free Software Foundation, Inc.
+# Copyright (C) 1996-2021 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/shadow/fgetspent.c b/shadow/fgetspent.c
index f80032408b..acfc85c921 100644
--- a/shadow/fgetspent.c
+++ b/shadow/fgetspent.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2021 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/shadow/fgetspent_r.c b/shadow/fgetspent_r.c
index d4d4e52f6a..6702ea0589 100644
--- a/shadow/fgetspent_r.c
+++ b/shadow/fgetspent_r.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2021 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/shadow/getspent.c b/shadow/getspent.c
index 232a886627..2ae9e1993b 100644
--- a/shadow/getspent.c
+++ b/shadow/getspent.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
diff --git a/shadow/getspent_r.c b/shadow/getspent_r.c
index b48621e4ff..63c0563a1c 100644
--- a/shadow/getspent_r.c
+++ b/shadow/getspent_r.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
diff --git a/shadow/getspnam.c b/shadow/getspnam.c
index dac7f88f2c..5d12c237be 100644
--- a/shadow/getspnam.c
+++ b/shadow/getspnam.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
diff --git a/shadow/getspnam_r.c b/shadow/getspnam_r.c
index 69e7ea7c09..8a3c5828f6 100644
--- a/shadow/getspnam_r.c
+++ b/shadow/getspnam_r.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
diff --git a/shadow/lckpwdf.c b/shadow/lckpwdf.c
index 210ead6e6f..6560d812e6 100644
--- a/shadow/lckpwdf.c
+++ b/shadow/lckpwdf.c
@@ -1,5 +1,5 @@
 /* Handle locking of password file.
-   Copyright (C) 1996-2020 Free Software Foundation, Inc.
+   Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
diff --git a/shadow/putspent.c b/shadow/putspent.c
index 79900d11ff..c2aad708f7 100644
--- a/shadow/putspent.c
+++ b/shadow/putspent.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/shadow/sgetspent.c b/shadow/sgetspent.c
index a386137094..4762381602 100644
--- a/shadow/sgetspent.c
+++ b/shadow/sgetspent.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2021 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/shadow/sgetspent_r.c b/shadow/sgetspent_r.c
index 1738517af6..5815d2957a 100644
--- a/shadow/sgetspent_r.c
+++ b/shadow/sgetspent_r.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2021 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/shadow/shadow.h b/shadow/shadow.h
index cb17ef62e3..bd5ef21f07 100644
--- a/shadow/shadow.h
+++ b/shadow/shadow.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2021 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/shadow/tst-putspent.c b/shadow/tst-putspent.c
index 3a0225565d..287641def7 100644
--- a/shadow/tst-putspent.c
+++ b/shadow/tst-putspent.c
@@ -1,5 +1,5 @@
 /* Test for processing of invalid shadow entries.  [BZ #18724]
-   Copyright (C) 2015-2020 Free Software Foundation, Inc.
+   Copyright (C) 2015-2021 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