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>

52 files changed, 0 insertions, 74 deletions

diff --git a/sysdeps/s390/atomic-machine.h b/sysdeps/s390/atomic-machine.h
index 052a7d2..34409ca 100644
--- a/sysdeps/s390/atomic-machine.h
+++ b/sysdeps/s390/atomic-machine.h
@@ -1,6 +1,5 @@
 /* Copyright (C) 2003-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
 
    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/s390/dl-procinfo.c b/sysdeps/s390/dl-procinfo.c
index c174e27..7314c31 100644
--- a/sysdeps/s390/dl-procinfo.c
+++ b/sysdeps/s390/dl-procinfo.c
@@ -1,7 +1,6 @@
 /* Data for s390 version of processor capability information.
    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/s390/dl-procinfo.h b/sysdeps/s390/dl-procinfo.h
index 2d9c305..2502dd2 100644
--- a/sysdeps/s390/dl-procinfo.h
+++ b/sysdeps/s390/dl-procinfo.h
@@ -1,7 +1,6 @@
 /* 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/s390/ffs.c b/sysdeps/s390/ffs.c
index c52b97f..bf18243 100644
--- a/sysdeps/s390/ffs.c
+++ b/sysdeps/s390/ffs.c
@@ -1,7 +1,6 @@
 /* ffs -- find first set bit in a word, counted from least significant end.
    S/390 version.
    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/s390/fpu/bits/fenv.h b/sysdeps/s390/fpu/bits/fenv.h
index da143b1..be5b7e8 100644
--- a/sysdeps/s390/fpu/bits/fenv.h
+++ b/sysdeps/s390/fpu/bits/fenv.h
@@ -1,6 +1,5 @@
 /* Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Denis Joseph Barrow <djbarrow@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/s390/fpu/e_sqrtl.c b/sysdeps/s390/fpu/e_sqrtl.c
index b7817ac..2631443 100644
--- a/sysdeps/s390/fpu/e_sqrtl.c
+++ b/sysdeps/s390/fpu/e_sqrtl.c
@@ -1,6 +1,5 @@
 /* Square root.  S/390 FPU version.
    Copyright (C) 2004-2021 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/s390/fpu/fedisblxcpt.c b/sysdeps/s390/fpu/fedisblxcpt.c
index 2b25e98..ca22ae5 100644
--- a/sysdeps/s390/fpu/fedisblxcpt.c
+++ b/sysdeps/s390/fpu/fedisblxcpt.c
@@ -1,7 +1,6 @@
 /* Disable floating-point exceptions.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Denis Joseph Barrow (djbarrow@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/s390/fpu/feenablxcpt.c b/sysdeps/s390/fpu/feenablxcpt.c
index bd5b8f0..64fe38a 100644
--- a/sysdeps/s390/fpu/feenablxcpt.c
+++ b/sysdeps/s390/fpu/feenablxcpt.c
@@ -1,7 +1,6 @@
 /* Enable floating-point exceptions.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Denis Joseph Barrow (djbarrow@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/s390/fpu/fegetenv.c b/sysdeps/s390/fpu/fegetenv.c
index 4a87cc1..8143d2e 100644
--- a/sysdeps/s390/fpu/fegetenv.c
+++ b/sysdeps/s390/fpu/fegetenv.c
@@ -1,7 +1,6 @@
 /* Store current floating-point environment.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Denis Joseph Barrow (djbarrow@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/s390/fpu/fegetexcept.c b/sysdeps/s390/fpu/fegetexcept.c
index ca0942f..1520840 100644
--- a/sysdeps/s390/fpu/fegetexcept.c
+++ b/sysdeps/s390/fpu/fegetexcept.c
@@ -1,7 +1,6 @@
 /* Get enabled floating-point exceptions.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Denis Joseph Barrow (djbarrow@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/s390/fpu/fegetround.c b/sysdeps/s390/fpu/fegetround.c
index e76866e..a2f9ccc 100644
--- a/sysdeps/s390/fpu/fegetround.c
+++ b/sysdeps/s390/fpu/fegetround.c
@@ -1,7 +1,6 @@
 /* Return current rounding direction.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Denis Joseph Barrow (djbarrow@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/s390/fpu/feholdexcpt.c b/sysdeps/s390/fpu/feholdexcpt.c
index a48343a..cd08909 100644
--- a/sysdeps/s390/fpu/feholdexcpt.c
+++ b/sysdeps/s390/fpu/feholdexcpt.c
@@ -1,7 +1,6 @@
 /* Store current floating-point environment and clear exceptions.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Denis Joseph Barrow (djbarrow@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/s390/fpu/fenv_libc.h b/sysdeps/s390/fpu/fenv_libc.h
index a3384d3..44a4dc3 100644
--- a/sysdeps/s390/fpu/fenv_libc.h
+++ b/sysdeps/s390/fpu/fenv_libc.h
@@ -1,6 +1,5 @@
 /* Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Denis Joseph Barrow (djbarrow@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/s390/fpu/fesetenv.c b/sysdeps/s390/fpu/fesetenv.c
index f94e7d7..4d6fdd5 100644
--- a/sysdeps/s390/fpu/fesetenv.c
+++ b/sysdeps/s390/fpu/fesetenv.c
@@ -1,7 +1,6 @@
 /* Install given floating-point environment.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Denis Joseph Barrow (djbarrow@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/s390/fpu/fesetround.c b/sysdeps/s390/fpu/fesetround.c
index d8aec32..6cbc432 100644
--- a/sysdeps/s390/fpu/fesetround.c
+++ b/sysdeps/s390/fpu/fesetround.c
@@ -1,7 +1,6 @@
 /* Set current rounding direction.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Denis Joseph Barrow (djbarrow@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/s390/fpu/feupdateenv.c b/sysdeps/s390/fpu/feupdateenv.c
index ae02e62..10f708c 100644
--- a/sysdeps/s390/fpu/feupdateenv.c
+++ b/sysdeps/s390/fpu/feupdateenv.c
@@ -1,7 +1,6 @@
 /* Install given floating-point environment and raise exceptions.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Denis Joseph Barrow (djbarrow@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/s390/fpu/fgetexcptflg.c b/sysdeps/s390/fpu/fgetexcptflg.c
index 4b86081..e20479c 100644
--- a/sysdeps/s390/fpu/fgetexcptflg.c
+++ b/sysdeps/s390/fpu/fgetexcptflg.c
@@ -1,7 +1,6 @@
 /* Store current representation for exceptions.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Denis Joseph Barrow (djbarrow@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/s390/fpu/fpu_control.h b/sysdeps/s390/fpu/fpu_control.h
index 2174e77..59d7d0d 100644
--- a/sysdeps/s390/fpu/fpu_control.h
+++ b/sysdeps/s390/fpu/fpu_control.h
@@ -1,7 +1,5 @@
 /* FPU control word definitions.  Stub version.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
-   Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com) and
-   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/s390/fpu/fraiseexcpt.c b/sysdeps/s390/fpu/fraiseexcpt.c
index b86b639..dd6ac72 100644
--- a/sysdeps/s390/fpu/fraiseexcpt.c
+++ b/sysdeps/s390/fpu/fraiseexcpt.c
@@ -1,8 +1,6 @@
 /* Raise given exceptions.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com) and
-   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/s390/fpu/fsetexcptflg.c b/sysdeps/s390/fpu/fsetexcptflg.c
index d636486..661707c 100644
--- a/sysdeps/s390/fpu/fsetexcptflg.c
+++ b/sysdeps/s390/fpu/fsetexcptflg.c
@@ -1,7 +1,6 @@
 /* Set floating-point environment exception handling.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Denis Joseph Barrow (djbarrow@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/s390/fpu/ftestexcept.c b/sysdeps/s390/fpu/ftestexcept.c
index fe3a222..707eebc 100644
--- a/sysdeps/s390/fpu/ftestexcept.c
+++ b/sysdeps/s390/fpu/ftestexcept.c
@@ -1,7 +1,6 @@
 /* Test exception in current environment.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Denis Joseph Barrow (djbarrow@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/s390/iso-8859-1_cp037_z900.c b/sysdeps/s390/iso-8859-1_cp037_z900.c
index 8a8ebb0..c5e834e 100644
--- a/sysdeps/s390/iso-8859-1_cp037_z900.c
+++ b/sysdeps/s390/iso-8859-1_cp037_z900.c
@@ -3,12 +3,6 @@
    This module uses the translate instruction.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
-   Author: Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
-   Based on the work by Ulrich Drepper  <drepper@cygnus.com>, 1997.
-
-   Thanks to Daniel Appich who covered the relevant performance work
-   in his diploma thesis.
-
    This is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
diff --git a/sysdeps/s390/jmpbuf-unwind.h b/sysdeps/s390/jmpbuf-unwind.h
index 61b724c..adebecf 100644
--- a/sysdeps/s390/jmpbuf-unwind.h
+++ b/sysdeps/s390/jmpbuf-unwind.h
@@ -1,6 +1,5 @@
 /* Copyright (C) 2003-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
 
    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/s390/memchr-z900.S b/sysdeps/s390/memchr-z900.S
index 72fd9e0..4056696 100644
--- a/sysdeps/s390/memchr-z900.S
+++ b/sysdeps/s390/memchr-z900.S
@@ -1,6 +1,5 @@
 /* Search a character in a block of memory.  31/64 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/s390/memset-z900.S b/sysdeps/s390/memset-z900.S
index fc72422..2632af4 100644
--- a/sysdeps/s390/memset-z900.S
+++ b/sysdeps/s390/memset-z900.S
@@ -1,6 +1,5 @@
 /* Set a block of memory to some byte value.  31/64 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/s390/s390-32/__longjmp.c b/sysdeps/s390/s390-32/__longjmp.c
index 955aaa3..0f20500 100644
--- a/sysdeps/s390/s390-32/__longjmp.c
+++ b/sysdeps/s390/s390-32/__longjmp.c
@@ -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/s390/s390-32/add_n.S b/sysdeps/s390/s390-32/add_n.S
index d9e7ebc..6fd339b 100644
--- a/sysdeps/s390/s390-32/add_n.S
+++ b/sysdeps/s390/s390-32/add_n.S
@@ -1,7 +1,6 @@
 /* Add two limb vectors of the same length > 0 and store sum in a third
    limb vector.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
diff --git a/sysdeps/s390/s390-32/addmul_1.S b/sysdeps/s390/s390-32/addmul_1.S
index 58f25d7b..ae9d5a9 100644
--- a/sysdeps/s390/s390-32/addmul_1.S
+++ b/sysdeps/s390/s390-32/addmul_1.S
@@ -1,7 +1,6 @@
 /* S390 __mpn_addmul_1 -- Multiply a limb vector with a limb and add
    the result to a second limb vector.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
diff --git a/sysdeps/s390/s390-32/dl-machine.h b/sysdeps/s390/s390-32/dl-machine.h
index d0ccd69..73cc007 100644
--- a/sysdeps/s390/s390-32/dl-machine.h
+++ b/sysdeps/s390/s390-32/dl-machine.h
@@ -1,6 +1,5 @@
 /* Machine-dependent ELF dynamic relocation inline functions.  S390 Version.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
-   Contributed by Carl Pederson & Martin Schwidefsky.
    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/s390/s390-32/mul_1.S b/sysdeps/s390/s390-32/mul_1.S
index bec9890..a93c5a5 100644
--- a/sysdeps/s390/s390-32/mul_1.S
+++ b/sysdeps/s390/s390-32/mul_1.S
@@ -1,7 +1,6 @@
 /* __mpn_mul_1 -- Multiply a limb vector with a limb and store
    the result in a second limb vector.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
diff --git a/sysdeps/s390/s390-32/s390-mcount.S b/sysdeps/s390/s390-32/s390-mcount.S
index 1a95b08..4289b4c 100644
--- a/sysdeps/s390/s390-32/s390-mcount.S
+++ b/sysdeps/s390/s390-32/s390-mcount.S
@@ -1,7 +1,6 @@
 /* S/390-specific implementation of profiling support.
    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/s390/s390-32/setjmp.S b/sysdeps/s390/s390-32/setjmp.S
index bcc1ae3..401b7df 100644
--- a/sysdeps/s390/s390-32/setjmp.S
+++ b/sysdeps/s390/s390-32/setjmp.S
@@ -1,6 +1,5 @@
 /* setjmp for s390, ELF version.
    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/s390/s390-32/start.S b/sysdeps/s390/s390-32/start.S
index b6cfa4c..211ba7a 100644
--- a/sysdeps/s390/s390-32/start.S
+++ b/sysdeps/s390/s390-32/start.S
@@ -1,6 +1,5 @@
 /* Startup code compliant to the ELF s390 ABI.
    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/s390/s390-32/strncpy-z900.S b/sysdeps/s390/s390-32/strncpy-z900.S
index b0c3fc9..0ce84e4 100644
--- a/sysdeps/s390/s390-32/strncpy-z900.S
+++ b/sysdeps/s390/s390-32/strncpy-z900.S
@@ -2,7 +2,6 @@
    destination.  For IBM S390
    This file is part of the GNU C Library.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
-   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/s390/s390-32/sub_n.S b/sysdeps/s390/s390-32/sub_n.S
index ab9f0d0..d5fe253 100644
--- a/sysdeps/s390/s390-32/sub_n.S
+++ b/sysdeps/s390/s390-32/sub_n.S
@@ -1,7 +1,6 @@
 /* __mpn_sub_n -- Add two limb vectors of the same length > 0 and store
    sum in a third limb vector.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
diff --git a/sysdeps/s390/s390-32/sysdep.h b/sysdeps/s390/s390-32/sysdep.h
index 099a95f..eb84c95 100644
--- a/sysdeps/s390/s390-32/sysdep.h
+++ b/sysdeps/s390/s390-32/sysdep.h
@@ -1,6 +1,5 @@
 /* Assembler macros for s390.
    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/s390/s390-64/__longjmp.c b/sysdeps/s390/s390-64/__longjmp.c
index 5f3d6c8..7935f2b 100644
--- a/sysdeps/s390/s390-64/__longjmp.c
+++ b/sysdeps/s390/s390-64/__longjmp.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/s390/s390-64/add_n.S b/sysdeps/s390/s390-64/add_n.S
index 69a3b70..685923d 100644
--- a/sysdeps/s390/s390-64/add_n.S
+++ b/sysdeps/s390/s390-64/add_n.S
@@ -1,7 +1,6 @@
 /* Add two limb vectors of the same length > 0 and store sum in a third
    limb vector.
    Copyright (C) 2001-2021 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU MP Library.
 
    The GNU MP Library is free software; you can redistribute it and/or modify
diff --git a/sysdeps/s390/s390-64/crti.S b/sysdeps/s390/s390-64/crti.S
index 3aa4411..d2a6336 100644
--- a/sysdeps/s390/s390-64/crti.S
+++ b/sysdeps/s390/s390-64/crti.S
@@ -1,6 +1,5 @@
 /* Special .init and .fini section support 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/s390/s390-64/crtn.S b/sysdeps/s390/s390-64/crtn.S
index 2271f56..5e75780 100644
--- a/sysdeps/s390/s390-64/crtn.S
+++ b/sysdeps/s390/s390-64/crtn.S
@@ -1,6 +1,5 @@
 /* Special .init and .fini section support 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/s390/s390-64/dl-machine.h b/sysdeps/s390/s390-64/dl-machine.h
index 543361c..aa9d524 100644
--- a/sysdeps/s390/s390-64/dl-machine.h
+++ b/sysdeps/s390/s390-64/dl-machine.h
@@ -1,7 +1,6 @@
 /* Machine-dependent ELF dynamic relocation inline functions.
    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/s390/s390-64/s390x-mcount.h b/sysdeps/s390/s390-64/s390x-mcount.h
index 30e7cef..e75504e 100644
--- a/sysdeps/s390/s390-64/s390x-mcount.h
+++ b/sysdeps/s390/s390-64/s390x-mcount.h
@@ -1,6 +1,5 @@
 /* 64 bit S/390-specific implementation of profiling support.
    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/s390/s390-64/setjmp.S b/sysdeps/s390/s390-64/setjmp.S
index bf72a08..44471df 100644
--- a/sysdeps/s390/s390-64/setjmp.S
+++ b/sysdeps/s390/s390-64/setjmp.S
@@ -1,6 +1,5 @@
 /* setjmp for 64 bit S/390, ELF 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/s390/s390-64/start.S b/sysdeps/s390/s390-64/start.S
index 4e65263..a9a1e1c 100644
--- a/sysdeps/s390/s390-64/start.S
+++ b/sysdeps/s390/s390-64/start.S
@@ -1,6 +1,5 @@
 /* Startup code compliant to the 64 bit S/390 ELF ABI.
    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/s390/s390-64/strncpy-z900.S b/sysdeps/s390/s390-64/strncpy-z900.S
index 0e49170..56e2ee2 100644
--- a/sysdeps/s390/s390-64/strncpy-z900.S
+++ b/sysdeps/s390/s390-64/strncpy-z900.S
@@ -1,7 +1,6 @@
 /* strncpy - copy at most n characters from a string from source to
    destination.  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/s390/s390-64/sub_n.S b/sysdeps/s390/s390-64/sub_n.S
index 02b113f..a18cfa3 100644
--- a/sysdeps/s390/s390-64/sub_n.S
+++ b/sysdeps/s390/s390-64/sub_n.S
@@ -1,7 +1,6 @@
 /* __mpn_sub_n -- Add two limb vectors of the same length > 0 and store
    sum in a third limb vector.  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 MP Library.
 
    The GNU C Library is free software; you can redistribute it and/or
diff --git a/sysdeps/s390/s390-64/sysdep.h b/sysdeps/s390/s390-64/sysdep.h
index 136f89e..b62d333 100644
--- a/sysdeps/s390/s390-64/sysdep.h
+++ b/sysdeps/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/s390/strcmp-z900.S b/sysdeps/s390/strcmp-z900.S
index 61bc8e9..cc229e3 100644
--- a/sysdeps/s390/strcmp-z900.S
+++ b/sysdeps/s390/strcmp-z900.S
@@ -1,7 +1,6 @@
 /* strcmp - compare two string.  64 bit S/390 version.
    This file is part of the GNU C Library.
    Copyright (C) 2001-2021 Free Software Foundation, Inc.
-   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/s390/strcpy-z900.S b/sysdeps/s390/strcpy-z900.S
index 1391178..476523d 100644
--- a/sysdeps/s390/strcpy-z900.S
+++ b/sysdeps/s390/strcpy-z900.S
@@ -1,6 +1,5 @@
 /* strcpy - copy a string from source to destination.  64/31 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/s390/utf16-utf32-z9.c b/sysdeps/s390/utf16-utf32-z9.c
index 93895f9..e288184 100644
--- a/sysdeps/s390/utf16-utf32-z9.c
+++ b/sysdeps/s390/utf16-utf32-z9.c
@@ -4,12 +4,6 @@
    instructions.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
-   Author: Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
-   Based on the work by Ulrich Drepper  <drepper@cygnus.com>, 1997.
-
-   Thanks to Daniel Appich who covered the relevant performance work
-   in his diploma thesis.
-
    This is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
diff --git a/sysdeps/s390/utf8-utf16-z9.c b/sysdeps/s390/utf8-utf16-z9.c
index 1ff16b5..d3f6ac7 100644
--- a/sysdeps/s390/utf8-utf16-z9.c
+++ b/sysdeps/s390/utf8-utf16-z9.c
@@ -4,12 +4,6 @@
    instructions.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
-   Author: Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
-   Based on the work by Ulrich Drepper  <drepper@cygnus.com>, 1997.
-
-   Thanks to Daniel Appich who covered the relevant performance work
-   in his diploma thesis.
-
    This is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
diff --git a/sysdeps/s390/utf8-utf32-z9.c b/sysdeps/s390/utf8-utf32-z9.c
index f1f4d3c..c14ba01 100644
--- a/sysdeps/s390/utf8-utf32-z9.c
+++ b/sysdeps/s390/utf8-utf32-z9.c
@@ -4,12 +4,6 @@
    instructions.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
 
-   Author: Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
-   Based on the work by Ulrich Drepper  <drepper@cygnus.com>, 1997.
-
-   Thanks to Daniel Appich who covered the relevant performance work
-   in his diploma thesis.
-
    This is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either