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

13 files changed, 13 insertions, 13 deletions

diff --git a/gshadow/Makefile b/gshadow/Makefile
index 2fdd0c7641..eff303f538 100644
--- a/gshadow/Makefile
+++ b/gshadow/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 2009-2021 Free Software Foundation, Inc.
+# Copyright (C) 2009-2022 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/gshadow/fgetsgent.c b/gshadow/fgetsgent.c
index fe3fbe26c5..02f9c7d643 100644
--- a/gshadow/fgetsgent.c
+++ b/gshadow/fgetsgent.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2021 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2022 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/gshadow/fgetsgent_r.c b/gshadow/fgetsgent_r.c
index d1d96e845e..45078319e1 100644
--- a/gshadow/fgetsgent_r.c
+++ b/gshadow/fgetsgent_r.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2021 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2022 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/gshadow/getsgent.c b/gshadow/getsgent.c
index b3f8af1f3d..b849b51d91 100644
--- a/gshadow/getsgent.c
+++ b/gshadow/getsgent.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2021 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2022 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/gshadow/getsgent_r.c b/gshadow/getsgent_r.c
index 0509d0a635..411d310a29 100644
--- a/gshadow/getsgent_r.c
+++ b/gshadow/getsgent_r.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2021 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2022 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/gshadow/getsgnam.c b/gshadow/getsgnam.c
index 726e59074a..e0680b3259 100644
--- a/gshadow/getsgnam.c
+++ b/gshadow/getsgnam.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2021 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2022 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/gshadow/getsgnam_r.c b/gshadow/getsgnam_r.c
index f080e67cbb..761a3ae969 100644
--- a/gshadow/getsgnam_r.c
+++ b/gshadow/getsgnam_r.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2021 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2022 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/gshadow/gshadow.h b/gshadow/gshadow.h
index ce86e4e047..66d6d3b883 100644
--- a/gshadow/gshadow.h
+++ b/gshadow/gshadow.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2021 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2022 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/gshadow/putsgent.c b/gshadow/putsgent.c
index f4c1e8f727..9e2dca7eaf 100644
--- a/gshadow/putsgent.c
+++ b/gshadow/putsgent.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2021 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2022 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/gshadow/sgetsgent.c b/gshadow/sgetsgent.c
index d7396cf181..4571306bf1 100644
--- a/gshadow/sgetsgent.c
+++ b/gshadow/sgetsgent.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2021 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2022 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/gshadow/sgetsgent_r.c b/gshadow/sgetsgent_r.c
index 565463b07e..28c826c9b5 100644
--- a/gshadow/sgetsgent_r.c
+++ b/gshadow/sgetsgent_r.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2009-2021 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2022 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/gshadow/tst-fgetsgent_r.c b/gshadow/tst-fgetsgent_r.c
index 2b20a83fd5..1b8fd40487 100644
--- a/gshadow/tst-fgetsgent_r.c
+++ b/gshadow/tst-fgetsgent_r.c
@@ -1,5 +1,5 @@
 /* Test for fgetsgent_r and buffer sizes.
-   Copyright (C) 2020-2021 Free Software Foundation, Inc.
+   Copyright (C) 2020-2022 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/gshadow/tst-putsgent.c b/gshadow/tst-putsgent.c
index 039dbbc4ed..4676338d12 100644
--- a/gshadow/tst-putsgent.c
+++ b/gshadow/tst-putsgent.c
@@ -1,5 +1,5 @@
 /* Test for processing of invalid gshadow entries.  [BZ #18724]
-   Copyright (C) 2015-2021 Free Software Foundation, Inc.
+   Copyright (C) 2015-2022 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