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 7061 files FOO.

I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah.  I don't
know why I run into these diagnostics whereas others evidently do not.

remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines

6 files changed, 6 insertions, 6 deletions

diff --git a/sysdeps/mips/nptl/bits/pthreadtypes-arch.h b/sysdeps/mips/nptl/bits/pthreadtypes-arch.h
index fbe0a46..da25234 100644
--- a/sysdeps/mips/nptl/bits/pthreadtypes-arch.h
+++ b/sysdeps/mips/nptl/bits/pthreadtypes-arch.h
@@ -1,5 +1,5 @@
 /* Machine-specific pthread type layouts.  MIPS version.
-   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+   Copyright (C) 2005-2022 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/mips/nptl/bits/semaphore.h b/sysdeps/mips/nptl/bits/semaphore.h
index 90ef70c..d06bc94 100644
--- a/sysdeps/mips/nptl/bits/semaphore.h
+++ b/sysdeps/mips/nptl/bits/semaphore.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2021 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2022 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/mips/nptl/bits/struct_mutex.h b/sysdeps/mips/nptl/bits/struct_mutex.h
index d7f5f88..84e713d 100644
--- a/sysdeps/mips/nptl/bits/struct_mutex.h
+++ b/sysdeps/mips/nptl/bits/struct_mutex.h
@@ -1,5 +1,5 @@
 /* MIPS internal mutex struct definitions.
-   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+   Copyright (C) 2019-2022 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/mips/nptl/bits/struct_rwlock.h b/sysdeps/mips/nptl/bits/struct_rwlock.h
index 6ca857c..a5d495f 100644
--- a/sysdeps/mips/nptl/bits/struct_rwlock.h
+++ b/sysdeps/mips/nptl/bits/struct_rwlock.h
@@ -1,5 +1,5 @@
 /* MIPS internal rwlock struct definitions.
-   Copyright (C) 2019-2021 Free Software Foundation, Inc.
+   Copyright (C) 2019-2022 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/mips/nptl/pthreaddef.h b/sysdeps/mips/nptl/pthreaddef.h
index 322591c..cff329a 100644
--- a/sysdeps/mips/nptl/pthreaddef.h
+++ b/sysdeps/mips/nptl/pthreaddef.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002-2021 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2022 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/mips/nptl/tls.h b/sysdeps/mips/nptl/tls.h
index ce7c660..03a5b24 100644
--- a/sysdeps/mips/nptl/tls.h
+++ b/sysdeps/mips/nptl/tls.h
@@ -1,5 +1,5 @@
 /* Definition for thread-local data handling.  NPTL/MIPS version.
-   Copyright (C) 2005-2021 Free Software Foundation, Inc.
+   Copyright (C) 2005-2022 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