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

12 files changed, 12 insertions, 12 deletions

diff --git a/sysdeps/csky/abiv2/__longjmp.S b/sysdeps/csky/abiv2/__longjmp.S
index f7c658251a..ca6ed33c58 100644
--- a/sysdeps/csky/abiv2/__longjmp.S
+++ b/sysdeps/csky/abiv2/__longjmp.S
@@ -1,5 +1,5 @@
 /* longjmp for C-SKY ABIV2.
-   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/csky/abiv2/csky-mcount.S b/sysdeps/csky/abiv2/csky-mcount.S
index 80ba82e619..54b9b80e37 100644
--- a/sysdeps/csky/abiv2/csky-mcount.S
+++ b/sysdeps/csky/abiv2/csky-mcount.S
@@ -1,5 +1,5 @@
 /* Implementation of profiling support.  C-SKY ABIV2 version.
-   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/csky/abiv2/dl-trampoline.S b/sysdeps/csky/abiv2/dl-trampoline.S
index 86797b6b63..89daa28450 100644
--- a/sysdeps/csky/abiv2/dl-trampoline.S
+++ b/sysdeps/csky/abiv2/dl-trampoline.S
@@ -1,5 +1,5 @@
 /* PLT trampolines.  C-SKY ABIV2 version.
-   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/csky/abiv2/memcmp.S b/sysdeps/csky/abiv2/memcmp.S
index 38660853b5..1560387618 100644
--- a/sysdeps/csky/abiv2/memcmp.S
+++ b/sysdeps/csky/abiv2/memcmp.S
@@ -1,5 +1,5 @@
 /* The assembly function for memory compare.  C-SKY ABIV2 version.
-   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/csky/abiv2/memcpy.S b/sysdeps/csky/abiv2/memcpy.S
index daa06ff6e8..da42c6f050 100644
--- a/sysdeps/csky/abiv2/memcpy.S
+++ b/sysdeps/csky/abiv2/memcpy.S
@@ -1,5 +1,5 @@
 /* The assembly function for memcpy.  C-SKY ABIV2 version.
-   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/csky/abiv2/memset.S b/sysdeps/csky/abiv2/memset.S
index 35452b96f8..28af39953a 100644
--- a/sysdeps/csky/abiv2/memset.S
+++ b/sysdeps/csky/abiv2/memset.S
@@ -1,5 +1,5 @@
 /* The assembly function for memset.  C-SKY ABIV2 version.
-   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/csky/abiv2/setjmp.S b/sysdeps/csky/abiv2/setjmp.S
index e00632e917..2902596df9 100644
--- a/sysdeps/csky/abiv2/setjmp.S
+++ b/sysdeps/csky/abiv2/setjmp.S
@@ -1,5 +1,5 @@
 /* setjmp for C-SKY ABIV2.
-   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/csky/abiv2/start.S b/sysdeps/csky/abiv2/start.S
index dd14d4421e..d65e37e61b 100644
--- a/sysdeps/csky/abiv2/start.S
+++ b/sysdeps/csky/abiv2/start.S
@@ -1,5 +1,5 @@
 /* Startup code compliant to the ELF C-SKY ABIV2.
-   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/csky/abiv2/strcmp.S b/sysdeps/csky/abiv2/strcmp.S
index b616ed6d99..8d766a3e6a 100644
--- a/sysdeps/csky/abiv2/strcmp.S
+++ b/sysdeps/csky/abiv2/strcmp.S
@@ -1,5 +1,5 @@
 /* The assembly function for string compare.  C-SKY ABIV2 version.
-   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/csky/abiv2/strcpy.S b/sysdeps/csky/abiv2/strcpy.S
index 6bc0b603f2..4e768f2694 100644
--- a/sysdeps/csky/abiv2/strcpy.S
+++ b/sysdeps/csky/abiv2/strcpy.S
@@ -1,5 +1,5 @@
 /* The assembly function for string copy.  C-SKY ABIV2 version.
-   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/csky/abiv2/strlen.S b/sysdeps/csky/abiv2/strlen.S
index 9115c64c7f..9bee703e00 100644
--- a/sysdeps/csky/abiv2/strlen.S
+++ b/sysdeps/csky/abiv2/strlen.S
@@ -1,5 +1,5 @@
 /* The assembly function for string length.  C-SKY ABIV2 version.
-   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/csky/abiv2/tls-macros.h b/sysdeps/csky/abiv2/tls-macros.h
index 47435e3ede..57ed1e74c6 100644
--- a/sysdeps/csky/abiv2/tls-macros.h
+++ b/sysdeps/csky/abiv2/tls-macros.h
@@ -1,5 +1,5 @@
 /* Macros for accessing thread-local storage.  C-SKY ABIV2 version.
-   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