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

14 files changed, 15 insertions, 15 deletions

diff --git a/csu/Makefile b/csu/Makefile
index 555ae27..c9385df 100644
--- a/csu/Makefile
+++ b/csu/Makefile
@@ -1,5 +1,5 @@
 # Makefile for csu code for GNU C library.
-# 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/csu/abi-note.c b/csu/abi-note.c
index 8febf4c..909db3a 100644
--- a/csu/abi-note.c
+++ b/csu/abi-note.c
@@ -1,5 +1,5 @@
 /* Special .init and .fini section support.
-   Copyright (C) 1997-2020 Free Software Foundation, Inc.
+   Copyright (C) 1997-2021 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/csu/check_fds.c b/csu/check_fds.c
index 29d9d04..fbab28c 100644
--- a/csu/check_fds.c
+++ b/csu/check_fds.c
@@ -1,4 +1,4 @@
-/* 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/csu/dso_handle.c b/csu/dso_handle.c
index c910af4..6b352a8 100644
--- a/csu/dso_handle.c
+++ b/csu/dso_handle.c
@@ -1,4 +1,4 @@
-/* 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/csu/elf-init.c b/csu/elf-init.c
index 98b3f11..6e96ab7 100644
--- a/csu/elf-init.c
+++ b/csu/elf-init.c
@@ -1,5 +1,5 @@
 /* Startup support for ELF initializers/finalizers in the main executable.
-   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/csu/errno-loc.c b/csu/errno-loc.c
index cf59c2b..437712a 100644
--- a/csu/errno-loc.c
+++ b/csu/errno-loc.c
@@ -1,6 +1,6 @@
 /* MT support function to get address of `errno' variable, non-threaded
    version.
-   Copyright (C) 1996-2020 Free Software Foundation, Inc.
+   Copyright (C) 1996-2021 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/csu/errno.c b/csu/errno.c
index 5511279..9466735 100644
--- a/csu/errno.c
+++ b/csu/errno.c
@@ -1,5 +1,5 @@
 /* Definition of `errno' variable.  Canonical 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/csu/gmon-start.c b/csu/gmon-start.c
index da9f04c..b343288 100644
--- a/csu/gmon-start.c
+++ b/csu/gmon-start.c
@@ -1,5 +1,5 @@
 /* Code to enable profiling at program startup.
-   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/csu/init-first.c b/csu/init-first.c
index 2115215..316fed2 100644
--- a/csu/init-first.c
+++ b/csu/init-first.c
@@ -1,5 +1,5 @@
 /* Initialization code run first thing by the ELF startup code.  Common 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/csu/init.c b/csu/init.c
index db75987..0aefc7f 100644
--- a/csu/init.c
+++ b/csu/init.c
@@ -1,5 +1,5 @@
 /* Special startup support.
-   Copyright (C) 1997-2020 Free Software Foundation, Inc.
+   Copyright (C) 1997-2021 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/csu/libc-start.c b/csu/libc-start.c
index d330812..db859c3 100644
--- a/csu/libc-start.c
+++ b/csu/libc-start.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998-2020 Free Software Foundation, Inc.
+/* Copyright (C) 1998-2021 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/csu/libc-tls.c b/csu/libc-tls.c
index c3589f0..f3a6a6a 100644
--- a/csu/libc-tls.c
+++ b/csu/libc-tls.c
@@ -1,5 +1,5 @@
 /* Initialization code for TLS in statically linked application.
-   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/csu/static-reloc.c b/csu/static-reloc.c
index b41a940..972c524 100644
--- a/csu/static-reloc.c
+++ b/csu/static-reloc.c
@@ -1,5 +1,5 @@
 /* Special startup support for non-PIE static executables.
-   Copyright (C) 2017-2020 Free Software Foundation, Inc.
+   Copyright (C) 2017-2021 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/csu/version.c b/csu/version.c
index 57b49df..5f36c4f 100644
--- a/csu/version.c
+++ b/csu/version.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
@@ -25,7 +25,7 @@ static const char __libc_version[] = VERSION;
 
 static const char banner[] =
 "GNU C Library "PKGVERSION RELEASE" release version "VERSION".\n\
-Copyright (C) 2020 Free Software Foundation, Inc.\n\
+Copyright (C) 2021 Free Software Foundation, Inc.\n\
 This is free software; see the source for copying conditions.\n\
 There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n\
 PARTICULAR PURPOSE.\n\