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/gshadow/Makefile b/gshadow/Makefile
index 32faf7a534..2fdd0c7641 100644
--- a/gshadow/Makefile
+++ b/gshadow/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 2009-2020 Free Software Foundation, Inc.
+# Copyright (C) 2009-2021 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/gshadow/fgetsgent.c b/gshadow/fgetsgent.c
index 881611f83a..fe3fbe26c5 100644
--- a/gshadow/fgetsgent.c
+++ b/gshadow/fgetsgent.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2021 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/gshadow/fgetsgent_r.c b/gshadow/fgetsgent_r.c
index 218206b4ac..d1d96e845e 100644
--- a/gshadow/fgetsgent_r.c
+++ b/gshadow/fgetsgent_r.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2021 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/gshadow/getsgent.c b/gshadow/getsgent.c
index c85f2e4a2a..cd53738d01 100644
--- a/gshadow/getsgent.c
+++ b/gshadow/getsgent.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2009.
 
diff --git a/gshadow/getsgent_r.c b/gshadow/getsgent_r.c
index b61ecde4ac..469e5033fd 100644
--- a/gshadow/getsgent_r.c
+++ b/gshadow/getsgent_r.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2009.
 
diff --git a/gshadow/getsgnam.c b/gshadow/getsgnam.c
index e246d487fe..0a3caec15a 100644
--- a/gshadow/getsgnam.c
+++ b/gshadow/getsgnam.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2009.
 
diff --git a/gshadow/getsgnam_r.c b/gshadow/getsgnam_r.c
index 3ab0c72215..2b3eb1d1d7 100644
--- a/gshadow/getsgnam_r.c
+++ b/gshadow/getsgnam_r.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2009.
 
diff --git a/gshadow/gshadow.h b/gshadow/gshadow.h
index 9bcb473ce5..ce86e4e047 100644
--- a/gshadow/gshadow.h
+++ b/gshadow/gshadow.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2021 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/gshadow/putsgent.c b/gshadow/putsgent.c
index 03cd8e1561..f4c1e8f727 100644
--- a/gshadow/putsgent.c
+++ b/gshadow/putsgent.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2021 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/gshadow/sgetsgent.c b/gshadow/sgetsgent.c
index 1ca81bd857..d7396cf181 100644
--- a/gshadow/sgetsgent.c
+++ b/gshadow/sgetsgent.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2021 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/gshadow/sgetsgent_r.c b/gshadow/sgetsgent_r.c
index 89a6c41ef7..565463b07e 100644
--- a/gshadow/sgetsgent_r.c
+++ b/gshadow/sgetsgent_r.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2021 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/gshadow/tst-fgetsgent_r.c b/gshadow/tst-fgetsgent_r.c
index f81e09b362..2b20a83fd5 100644
--- a/gshadow/tst-fgetsgent_r.c
+++ b/gshadow/tst-fgetsgent_r.c
@@ -1,5 +1,5 @@
 /* Test for fgetsgent_r and buffer sizes.
-   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
diff --git a/gshadow/tst-putsgent.c b/gshadow/tst-putsgent.c
index 3f5545f430..039dbbc4ed 100644
--- a/gshadow/tst-putsgent.c
+++ b/gshadow/tst-putsgent.c
@@ -1,5 +1,5 @@
 /* Test for processing of invalid gshadow 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