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

11 files changed, 11 insertions, 11 deletions

diff --git a/sysdeps/mach/htl/bits/spin-lock-inline.h b/sysdeps/mach/htl/bits/spin-lock-inline.h
index 006b6fd5f2..a28db5d83c 100644
--- a/sysdeps/mach/htl/bits/spin-lock-inline.h
+++ b/sysdeps/mach/htl/bits/spin-lock-inline.h
@@ -1,5 +1,5 @@
 /* Definitions of user-visible names for spin locks.
-   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/sysdeps/mach/htl/bits/types/__pthread_spinlock_t.h b/sysdeps/mach/htl/bits/types/__pthread_spinlock_t.h
index 5622bb7d45..dd1d70f045 100644
--- a/sysdeps/mach/htl/bits/types/__pthread_spinlock_t.h
+++ b/sysdeps/mach/htl/bits/types/__pthread_spinlock_t.h
@@ -1,5 +1,5 @@
 /* Definitions of user-visible names for spin locks.
-   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/sysdeps/mach/htl/pt-block.c b/sysdeps/mach/htl/pt-block.c
index 28bae157d1..7f94b2e081 100644
--- a/sysdeps/mach/htl/pt-block.c
+++ b/sysdeps/mach/htl/pt-block.c
@@ -1,5 +1,5 @@
 /* Block a thread.  Mach version.
-   Copyright (C) 2000-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 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/mach/htl/pt-spin.c b/sysdeps/mach/htl/pt-spin.c
index 785c6d4876..07ebae341c 100644
--- a/sysdeps/mach/htl/pt-spin.c
+++ b/sysdeps/mach/htl/pt-spin.c
@@ -1,5 +1,5 @@
 /* Spin locks.  Mach version.
-   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Copyright (C) 2002-2021 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/mach/htl/pt-stack-alloc.c b/sysdeps/mach/htl/pt-stack-alloc.c
index 08e33c0470..3bd3c06fcb 100644
--- a/sysdeps/mach/htl/pt-stack-alloc.c
+++ b/sysdeps/mach/htl/pt-stack-alloc.c
@@ -1,5 +1,5 @@
 /* Allocate a new stack.  Mach version.
-   Copyright (C) 2000-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 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/mach/htl/pt-thread-alloc.c b/sysdeps/mach/htl/pt-thread-alloc.c
index b2f8decc0b..875ebaa819 100644
--- a/sysdeps/mach/htl/pt-thread-alloc.c
+++ b/sysdeps/mach/htl/pt-thread-alloc.c
@@ -1,5 +1,5 @@
 /* Start thread.  Mach version.
-   Copyright (C) 2000-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 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/mach/htl/pt-thread-start.c b/sysdeps/mach/htl/pt-thread-start.c
index c28009c5d4..aa1045182c 100644
--- a/sysdeps/mach/htl/pt-thread-start.c
+++ b/sysdeps/mach/htl/pt-thread-start.c
@@ -1,5 +1,5 @@
 /* Start thread.  Mach version.
-   Copyright (C) 2000-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 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/mach/htl/pt-thread-terminate.c b/sysdeps/mach/htl/pt-thread-terminate.c
index e59d286ebd..cfd7cdb2e8 100644
--- a/sysdeps/mach/htl/pt-thread-terminate.c
+++ b/sysdeps/mach/htl/pt-thread-terminate.c
@@ -1,5 +1,5 @@
 /* Deallocate the kernel thread resources.  Mach version.
-   Copyright (C) 2000-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 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/mach/htl/pt-timedblock.c b/sysdeps/mach/htl/pt-timedblock.c
index ead070e397..ce38104582 100644
--- a/sysdeps/mach/htl/pt-timedblock.c
+++ b/sysdeps/mach/htl/pt-timedblock.c
@@ -1,5 +1,5 @@
 /* Block a thread with a timeout.  Mach version.
-   Copyright (C) 2000-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 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/mach/htl/pt-wakeup.c b/sysdeps/mach/htl/pt-wakeup.c
index c0f9982a0f..bad6eca056 100644
--- a/sysdeps/mach/htl/pt-wakeup.c
+++ b/sysdeps/mach/htl/pt-wakeup.c
@@ -1,5 +1,5 @@
 /* Wakeup a thread.  Mach version.
-   Copyright (C) 2000-2020 Free Software Foundation, Inc.
+   Copyright (C) 2000-2021 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/mach/htl/thrd_yield.c b/sysdeps/mach/htl/thrd_yield.c
index 48e17e1c0a..86aa7c775a 100644
--- a/sysdeps/mach/htl/thrd_yield.c
+++ b/sysdeps/mach/htl/thrd_yield.c
@@ -1,5 +1,5 @@
 /* sched_yield -- yield the processor.  Mach 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