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

15 files changed, 15 insertions, 15 deletions

diff --git a/setjmp/Makefile b/setjmp/Makefile
index 603f61d..e1ad33c 100644
--- a/setjmp/Makefile
+++ b/setjmp/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/setjmp/__longjmp.c b/setjmp/__longjmp.c
index 2cb7abd..2c8b4aa 100644
--- a/setjmp/__longjmp.c
+++ b/setjmp/__longjmp.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/setjmp/bits/setjmp2.h b/setjmp/bits/setjmp2.h
index c54f9c2..f883f35 100644
--- a/setjmp/bits/setjmp2.h
+++ b/setjmp/bits/setjmp2.h
@@ -1,5 +1,5 @@
 /* Checking macros for setjmp functions.
-   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/setjmp/bits/types/struct___jmp_buf_tag.h b/setjmp/bits/types/struct___jmp_buf_tag.h
index 9d8634f..c7e0911 100644
--- a/setjmp/bits/types/struct___jmp_buf_tag.h
+++ b/setjmp/bits/types/struct___jmp_buf_tag.h
@@ -1,5 +1,5 @@
 /* Define struct __jmp_buf_tag.
-   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/setjmp/bsd-_setjmp.c b/setjmp/bsd-_setjmp.c
index 86866e3..c2ca6c9 100644
--- a/setjmp/bsd-_setjmp.c
+++ b/setjmp/bsd-_setjmp.c
@@ -1,5 +1,5 @@
 /* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'.  Stub 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/setjmp/bsd-setjmp.c b/setjmp/bsd-setjmp.c
index d32a3ba..66c85f1 100644
--- a/setjmp/bsd-setjmp.c
+++ b/setjmp/bsd-setjmp.c
@@ -1,5 +1,5 @@
 /* BSD `setjmp' entry point to `sigsetjmp (..., 1)'.  Stub 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/setjmp/bug269-setjmp.c b/setjmp/bug269-setjmp.c
index cb5ac8c..3746cba 100644
--- a/setjmp/bug269-setjmp.c
+++ b/setjmp/bug269-setjmp.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2004-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2004-2021 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/setjmp/jmp-unwind.c b/setjmp/jmp-unwind.c
index 6a1d741..e284146 100644
--- a/setjmp/jmp-unwind.c
+++ b/setjmp/jmp-unwind.c
@@ -1,5 +1,5 @@
 /* _longjmp_unwind -- Clean up stack frames unwound by longjmp.  Stub 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/setjmp/longjmp.c b/setjmp/longjmp.c
index 686ab19..68012da 100644
--- a/setjmp/longjmp.c
+++ b/setjmp/longjmp.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/setjmp/setjmp.c b/setjmp/setjmp.c
index d26e8b3..5ecc1b8 100644
--- a/setjmp/setjmp.c
+++ b/setjmp/setjmp.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/setjmp/setjmp.h b/setjmp/setjmp.h
index c6c59f4..6f5a8e5 100644
--- a/setjmp/setjmp.h
+++ b/setjmp/setjmp.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
diff --git a/setjmp/sigjmp.c b/setjmp/sigjmp.c
index 3763b29..08466eb 100644
--- a/setjmp/sigjmp.c
+++ b/setjmp/sigjmp.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/setjmp/tst-setjmp-fp.c b/setjmp/tst-setjmp-fp.c
index bbf6c29..e53426e 100644
--- a/setjmp/tst-setjmp-fp.c
+++ b/setjmp/tst-setjmp-fp.c
@@ -1,6 +1,6 @@
 /* Test that setjmp/longjmp do not save and restore floating-point
    exceptions and rounding modes.
-   Copyright (C) 2013-2020 Free Software Foundation, Inc.
+   Copyright (C) 2013-2021 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/setjmp/tst-setjmp.c b/setjmp/tst-setjmp.c
index 9742912..f0a3286 100644
--- a/setjmp/tst-setjmp.c
+++ b/setjmp/tst-setjmp.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/setjmp/tst-sigsetjmp.c b/setjmp/tst-sigsetjmp.c
index 83ef7ff..492a43c 100644
--- a/setjmp/tst-sigsetjmp.c
+++ b/setjmp/tst-sigsetjmp.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2013-2020 Free Software Foundation, Inc.
+/* Copyright (C) 2013-2021 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