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

17 files changed, 17 insertions, 17 deletions

diff --git a/sysdeps/s390/s390-64/__longjmp.c b/sysdeps/s390/s390-64/__longjmp.c
index 8afa8af73b..5f3d6c850e 100644
--- a/sysdeps/s390/s390-64/__longjmp.c
+++ b/sysdeps/s390/s390-64/__longjmp.c
@@ -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.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
 
diff --git a/sysdeps/s390/s390-64/add_n.S b/sysdeps/s390/s390-64/add_n.S
index 2979a631c8..69a3b70384 100644
--- a/sysdeps/s390/s390-64/add_n.S
+++ b/sysdeps/s390/s390-64/add_n.S
@@ -1,6 +1,6 @@
 /* Add two limb vectors of the same length > 0 and store sum in a third
    limb vector.
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU MP Library.
 
diff --git a/sysdeps/s390/s390-64/crti.S b/sysdeps/s390/s390-64/crti.S
index e135874343..3aa441187d 100644
--- a/sysdeps/s390/s390-64/crti.S
+++ b/sysdeps/s390/s390-64/crti.S
@@ -1,5 +1,5 @@
 /* Special .init and .fini section support for 64 bit S/390.
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU C Library.
 
diff --git a/sysdeps/s390/s390-64/crtn.S b/sysdeps/s390/s390-64/crtn.S
index 2cd0d24250..2271f56981 100644
--- a/sysdeps/s390/s390-64/crtn.S
+++ b/sysdeps/s390/s390-64/crtn.S
@@ -1,5 +1,5 @@
 /* Special .init and .fini section support for 64 bit S/390.
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU C Library.
 
diff --git a/sysdeps/s390/s390-64/dl-hwcaps-subdirs.c b/sysdeps/s390/s390-64/dl-hwcaps-subdirs.c
index 3673808a45..b9d094f3d7 100644
--- a/sysdeps/s390/s390-64/dl-hwcaps-subdirs.c
+++ b/sysdeps/s390/s390-64/dl-hwcaps-subdirs.c
@@ -1,5 +1,5 @@
 /* Architecture-specific glibc-hwcaps subdirectories.  s390x version.
-   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/sysdeps/s390/s390-64/dl-machine.h b/sysdeps/s390/s390-64/dl-machine.h
index 0fe96e5875..543361c836 100644
--- a/sysdeps/s390/s390-64/dl-machine.h
+++ b/sysdeps/s390/s390-64/dl-machine.h
@@ -1,6 +1,6 @@
 /* Machine-dependent ELF dynamic relocation inline functions.
    64 bit S/390 Version.
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU C Library.
 
diff --git a/sysdeps/s390/s390-64/dl-trampoline.S b/sysdeps/s390/s390-64/dl-trampoline.S
index 951702b69b..cd710e764d 100644
--- a/sysdeps/s390/s390-64/dl-trampoline.S
+++ b/sysdeps/s390/s390-64/dl-trampoline.S
@@ -1,5 +1,5 @@
 /* PLT trampolines.  s390x version.
-   Copyright (C) 2005-2020 Free Software Foundation, Inc.
+   Copyright (C) 2005-2021 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/s390/s390-64/dl-trampoline.h b/sysdeps/s390/s390-64/dl-trampoline.h
index 869cddce62..ae741a3bad 100644
--- a/sysdeps/s390/s390-64/dl-trampoline.h
+++ b/sysdeps/s390/s390-64/dl-trampoline.h
@@ -1,5 +1,5 @@
 /* PLT trampolines.  s390x version.
-   Copyright (C) 2016-2020 Free Software Foundation, Inc.
+   Copyright (C) 2016-2021 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/s390/s390-64/s390x-mcount.S b/sysdeps/s390/s390-64/s390x-mcount.S
index dc7c547c52..bd43450329 100644
--- a/sysdeps/s390/s390-64/s390x-mcount.S
+++ b/sysdeps/s390/s390-64/s390x-mcount.S
@@ -1,5 +1,5 @@
 /* 64 bit S/390-specific implementation of profiling support.
-   Copyright (C) 2018-2020 Free Software Foundation, Inc.
+   Copyright (C) 2018-2021 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/s390/s390-64/s390x-mcount.h b/sysdeps/s390/s390-64/s390x-mcount.h
index 1e942364cd..30e7ceffaa 100644
--- a/sysdeps/s390/s390-64/s390x-mcount.h
+++ b/sysdeps/s390/s390-64/s390x-mcount.h
@@ -1,5 +1,5 @@
 /* 64 bit S/390-specific implementation of profiling support.
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com)
    This file is part of the GNU C Library.
 
diff --git a/sysdeps/s390/s390-64/setjmp.S b/sysdeps/s390/s390-64/setjmp.S
index 89314b9bcf..bf72a084b0 100644
--- a/sysdeps/s390/s390-64/setjmp.S
+++ b/sysdeps/s390/s390-64/setjmp.S
@@ -1,5 +1,5 @@
 /* setjmp for 64 bit S/390, ELF version.
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU C Library.
 
diff --git a/sysdeps/s390/s390-64/start.S b/sysdeps/s390/s390-64/start.S
index 02ed4aad51..0d9d30916d 100644
--- a/sysdeps/s390/s390-64/start.S
+++ b/sysdeps/s390/s390-64/start.S
@@ -1,5 +1,5 @@
 /* Startup code compliant to the 64 bit S/390 ELF ABI.
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU C Library.
 
diff --git a/sysdeps/s390/s390-64/strncpy-z900.S b/sysdeps/s390/s390-64/strncpy-z900.S
index 120b444217..0e491702c4 100644
--- a/sysdeps/s390/s390-64/strncpy-z900.S
+++ b/sysdeps/s390/s390-64/strncpy-z900.S
@@ -1,6 +1,6 @@
 /* strncpy - copy at most n characters from a string from source to
    destination.  64 bit S/390 version
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU C Library.
 
diff --git a/sysdeps/s390/s390-64/sub_n.S b/sysdeps/s390/s390-64/sub_n.S
index 094786a761..02b113f5e4 100644
--- a/sysdeps/s390/s390-64/sub_n.S
+++ b/sysdeps/s390/s390-64/sub_n.S
@@ -1,6 +1,6 @@
 /* __mpn_sub_n -- Add two limb vectors of the same length > 0 and store
    sum in a third limb vector.  64 bit S/390 version.
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU MP Library.
 
diff --git a/sysdeps/s390/s390-64/sysdep.h b/sysdeps/s390/s390-64/sysdep.h
index 2da2b0049e..136f89e8fe 100644
--- a/sysdeps/s390/s390-64/sysdep.h
+++ b/sysdeps/s390/s390-64/sysdep.h
@@ -1,5 +1,5 @@
 /* Assembler macros for 64 bit S/390.
-   Copyright (C) 2001-2020 Free Software Foundation, Inc.
+   Copyright (C) 2001-2021 Free Software Foundation, Inc.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU C Library.
 
diff --git a/sysdeps/s390/s390-64/tst-audit.h b/sysdeps/s390/s390-64/tst-audit.h
index 070a0f3ba3..d35c7a2f13 100644
--- a/sysdeps/s390/s390-64/tst-audit.h
+++ b/sysdeps/s390/s390-64/tst-audit.h
@@ -1,6 +1,6 @@
 /* Definitions for testing PLT entry/exit auditing.  S/390 64-bit version.
 
-   Copyright (C) 2012-2020 Free Software Foundation, Inc.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
 
diff --git a/sysdeps/s390/s390-64/tst-glibc-hwcaps.c b/sysdeps/s390/s390-64/tst-glibc-hwcaps.c
index 690f0d5fab..02397a478c 100644
--- a/sysdeps/s390/s390-64/tst-glibc-hwcaps.c
+++ b/sysdeps/s390/s390-64/tst-glibc-hwcaps.c
@@ -1,5 +1,5 @@
 /* glibc-hwcaps subdirectory test.  s390x version.
-   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