Remove "Contributed by" lines

We stopped adding "Contributed by" or similar lines in sources in 2012
in favour of git logs and keeping the Contributors section of the
glibc manual up to date.  Removing these lines makes the license
header a bit more consistent across files and also removes the
possibility of error in attribution when license blocks or files are
copied across since the contributed-by lines don't actually reflect
reality in those cases.

Move all "Contributed by" and similar lines (Written by, Test by,
etc.) into a new file CONTRIBUTED-BY to retain record of these
contributions.  These contributors are also mentioned in
manual/contrib.texi, so we just maintain this additional record as a
courtesy to the earlier developers.

The following scripts were used to filter a list of files to edit in
place and to clean up the CONTRIBUTED-BY file respectively.  These
were not added to the glibc sources because they're not expected to be
of any use in future given that this is a one time task:

https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc
https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

47 files changed, 0 insertions, 47 deletions

diff --git a/sysdeps/unix/sysv/linux/s390/bits/elfclass.h b/sysdeps/unix/sysv/linux/s390/bits/elfclass.h
index c2ac7f7..10609d2 100644
--- a/sysdeps/unix/sysv/linux/s390/bits/elfclass.h
+++ b/sysdeps/unix/sysv/linux/s390/bits/elfclass.h
@@ -1,5 +1,4 @@
 /* Copyright (C) 2001-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    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/unix/sysv/linux/s390/dl-procinfo.h b/sysdeps/unix/sysv/linux/s390/dl-procinfo.h
index 76ce33e..47def4c 100644
--- a/sysdeps/unix/sysv/linux/s390/dl-procinfo.h
+++ b/sysdeps/unix/sysv/linux/s390/dl-procinfo.h
@@ -1,7 +1,6 @@
 /* Linux/s390 version of processor capability information handling macros.
    Copyright (C) 2006-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2006.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/____longjmp_chk.c b/sysdeps/unix/sysv/linux/s390/s390-32/____longjmp_chk.c
index 0ce15a5..09487c1 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/____longjmp_chk.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/____longjmp_chk.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 2009-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/clone.S b/sysdeps/unix/sysv/linux/s390/s390-32/clone.S
index 08145e4..dbbe5a5 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/clone.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/clone.S
@@ -1,6 +1,5 @@
 /* Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S b/sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S
index 7cfd66b..e65641e 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S
@@ -1,6 +1,5 @@
 /* Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/getutent.c b/sysdeps/unix/sysv/linux/s390/s390-32/getutent.c
index 7774a59..210e875 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/getutent.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/getutent.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/getutent_r.c b/sysdeps/unix/sysv/linux/s390/s390-32/getutent_r.c
index eebccec..d06441f 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/getutent_r.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/getutent_r.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/getutid.c b/sysdeps/unix/sysv/linux/s390/s390-32/getutid.c
index f50d633..79f9d9a 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/getutid.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/getutid.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/getutid_r.c b/sysdeps/unix/sysv/linux/s390/s390-32/getutid_r.c
index 5039b99..d648f2e 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/getutid_r.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/getutid_r.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/getutline.c b/sysdeps/unix/sysv/linux/s390/s390-32/getutline.c
index 32b3957..7b79cb7 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/getutline.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/getutline.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/getutline_r.c b/sysdeps/unix/sysv/linux/s390/s390-32/getutline_r.c
index c9238c5..3246dbe 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/getutline_r.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/getutline_r.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/getutmp.c b/sysdeps/unix/sysv/linux/s390/s390-32/getutmp.c
index 5820701..bdb8f4b 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/getutmp.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/getutmp.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/getutxent.c b/sysdeps/unix/sysv/linux/s390/s390-32/getutxent.c
index d91795a..cf27aee 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/getutxent.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/getutxent.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/getutxid.c b/sysdeps/unix/sysv/linux/s390/s390-32/getutxid.c
index d5d457d..2a4c9ae 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/getutxid.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/getutxid.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/getutxline.c b/sysdeps/unix/sysv/linux/s390/s390-32/getutxline.c
index ab0189f..eb524ec 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/getutxline.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/getutxline.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/login.c b/sysdeps/unix/sysv/linux/s390/s390-32/login.c
index 62742a8..753763f 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/login.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/login.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/login32.c b/sysdeps/unix/sysv/linux/s390/s390-32/login32.c
index e37da4e..271afa0 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/login32.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/login32.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/makecontext.c b/sysdeps/unix/sysv/linux/s390/s390-32/makecontext.c
index e4e0f3a..bfb7460 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/makecontext.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/makecontext.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/pututxline.c b/sysdeps/unix/sysv/linux/s390/s390-32/pututxline.c
index 1dfabc8..40736c6 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/pututxline.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/pututxline.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/register-dump.h b/sysdeps/unix/sysv/linux/s390/s390-32/register-dump.h
index fe96d0d..a4647fc 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/register-dump.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/register-dump.h
@@ -1,6 +1,5 @@
 /* Dump registers.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    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/unix/sysv/linux/s390/s390-32/setcontext.S b/sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S
index 37aa249..b0aeb57 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S
@@ -1,6 +1,5 @@
 /* Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/swapcontext.S b/sysdeps/unix/sysv/linux/s390/s390-32/swapcontext.S
index 2ab9108..27edb0a 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/swapcontext.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/swapcontext.S
@@ -1,6 +1,5 @@
 /* Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/syscall.S b/sysdeps/unix/sysv/linux/s390/s390-32/syscall.S
index 50712b6..426563b 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/syscall.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/syscall.S
@@ -1,5 +1,4 @@
 /* Copyright (C) 2000-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    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/unix/sysv/linux/s390/s390-32/sysdep.S b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.S
index 7639f35..a768d67 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.S
@@ -1,5 +1,4 @@
 /* Copyright (C) 2000-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    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/unix/sysv/linux/s390/s390-32/sysdep.h b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h
index 34fb5db..c26c228 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h
@@ -1,5 +1,4 @@
 /* Copyright (C) 2000-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    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/unix/sysv/linux/s390/s390-32/updwtmp.c b/sysdeps/unix/sysv/linux/s390/s390-32/updwtmp.c
index d4aa0ce..dfe2566 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/updwtmp.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/updwtmp.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/updwtmpx.c b/sysdeps/unix/sysv/linux/s390/s390-32/updwtmpx.c
index 51cf1f5..3b95890 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/updwtmpx.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/updwtmpx.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/utmp-compat.h b/sysdeps/unix/sysv/linux/s390/s390-32/utmp-compat.h
index 28632f7..11c7937 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/utmp-compat.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/utmp-compat.h
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/utmp-convert.h b/sysdeps/unix/sysv/linux/s390/s390-32/utmp-convert.h
index 9418afb..f2edd46 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/utmp-convert.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/utmp-convert.h
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/utmp32.c b/sysdeps/unix/sysv/linux/s390/s390-32/utmp32.c
index 32496e5..0b3cade 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/utmp32.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/utmp32.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/utmpx-convert.h b/sysdeps/unix/sysv/linux/s390/s390-32/utmpx-convert.h
index ad7de5c..a4c0d1c 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/utmpx-convert.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/utmpx-convert.h
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/utmpx32.c b/sysdeps/unix/sysv/linux/s390/s390-32/utmpx32.c
index ed97096..8a5d56c 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/utmpx32.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/utmpx32.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
-   Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>.
    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/unix/sysv/linux/s390/s390-32/vfork.S b/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S
index 019f535..5ba79c4 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S
@@ -1,6 +1,5 @@
 /* Copyright (C) 2004-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/____longjmp_chk.c b/sysdeps/unix/sysv/linux/s390/s390-64/____longjmp_chk.c
index c7b2ab0..389ad54 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/____longjmp_chk.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/____longjmp_chk.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 2009-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/clone.S b/sysdeps/unix/sysv/linux/s390/s390-64/clone.S
index 21d485e..584f0d7 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/clone.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/clone.S
@@ -1,6 +1,5 @@
 /* Wrapper around clone system call.  64 bit S/390 version.
    Copyright (C) 2001-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    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/unix/sysv/linux/s390/s390-64/getcontext.S b/sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S
index 65f54e3..edf6265 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S
@@ -1,6 +1,5 @@
 /* Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c b/sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c
index 838243d..43b9b15 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/register-dump.h b/sysdeps/unix/sysv/linux/s390/s390-64/register-dump.h
index b5aa8dc..1c9ca2e 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/register-dump.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/register-dump.h
@@ -1,6 +1,5 @@
 /* Dump registers.  64 bit S/390 version.
    Copyright (C) 2001-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    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/unix/sysv/linux/s390/s390-64/setcontext.S b/sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S
index f2603a0..ad7ee0f 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S
@@ -1,6 +1,5 @@
 /* Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/swapcontext.S b/sysdeps/unix/sysv/linux/s390/s390-64/swapcontext.S
index 85e0242..66090e8 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/swapcontext.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/swapcontext.S
@@ -1,6 +1,5 @@
 /* Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/syscall.S b/sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
index 2323225..4368cb1 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
@@ -1,5 +1,4 @@
 /* Copyright (C) 2001-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    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/unix/sysv/linux/s390/s390-64/sysdep.S b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.S
index 0ae81ba..9fe8d00 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.S
@@ -1,5 +1,4 @@
 /* Copyright (C) 2001-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    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/unix/sysv/linux/s390/s390-64/sysdep.h b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h
index cbf2553..713d8ff 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h
@@ -1,6 +1,5 @@
 /* Assembler macros for 64 bit S/390.
    Copyright (C) 2001-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    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/unix/sysv/linux/s390/s390-64/vfork.S b/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S
index 2b2322b..342dc2f 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S
@@ -1,6 +1,5 @@
 /* Copyright (C) 2004-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
diff --git a/sysdeps/unix/sysv/linux/s390/sigcontextinfo.h b/sysdeps/unix/sysv/linux/s390/sigcontextinfo.h
index 5fc4238..cf996cc 100644
--- a/sysdeps/unix/sysv/linux/s390/sigcontextinfo.h
+++ b/sysdeps/unix/sysv/linux/s390/sigcontextinfo.h
@@ -1,5 +1,4 @@
 /* Copyright (C) 2000-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    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/unix/sysv/linux/s390/sys/ptrace.h b/sysdeps/unix/sysv/linux/s390/sys/ptrace.h
index 3ddd2e4..6951a39 100644
--- a/sysdeps/unix/sysv/linux/s390/sys/ptrace.h
+++ b/sysdeps/unix/sysv/linux/s390/sys/ptrace.h
@@ -1,6 +1,5 @@
 /* `ptrace' debugger support interface.  Linux/S390 version.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
-   Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
    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/unix/sysv/linux/s390/sys/ucontext.h b/sysdeps/unix/sysv/linux/s390/sys/ucontext.h
index d81bf40..1fb8cb9 100644
--- a/sysdeps/unix/sysv/linux/s390/sys/ucontext.h
+++ b/sysdeps/unix/sysv/linux/s390/sys/ucontext.h
@@ -1,5 +1,4 @@
 /* Copyright (C) 2000-2021 Free Software Foundation, Inc.
-   Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or