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>

12 files changed, 0 insertions, 12 deletions

diff --git a/sysdeps/arm/armv6t2/memchr.S b/sysdeps/arm/armv6t2/memchr.S
index 4e105a0c44..7baf796da3 100644
--- a/sysdeps/arm/armv6t2/memchr.S
+++ b/sysdeps/arm/armv6t2/memchr.S
@@ -1,6 +1,5 @@
 /* Copyright (C) 2011-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Code contributed by Dave Gilbert <david.gilbert@linaro.org>
 
    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/arm/backtrace.c b/sysdeps/arm/backtrace.c
index 193f2410ba..8307813221 100644
--- a/sysdeps/arm/backtrace.c
+++ b/sysdeps/arm/backtrace.c
@@ -1,7 +1,6 @@
 /* Return backtrace of current program state.
    Copyright (C) 2008-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Kazu Hirata <kazu@codesourcery.com>, 2008.
 
    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/arm/fedisblxcpt.c b/sysdeps/arm/fedisblxcpt.c
index 5025fa13b7..96abbd0cbd 100644
--- a/sysdeps/arm/fedisblxcpt.c
+++ b/sysdeps/arm/fedisblxcpt.c
@@ -1,7 +1,6 @@
 /* Disable floating-point exceptions.
    Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Philip Blundell <philb@gnu.org>, 2001.
 
    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/arm/feenablxcpt.c b/sysdeps/arm/feenablxcpt.c
index 94b774797c..b1f70ccaa0 100644
--- a/sysdeps/arm/feenablxcpt.c
+++ b/sysdeps/arm/feenablxcpt.c
@@ -1,7 +1,6 @@
 /* Enable floating-point exceptions.
    Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Philip Blundell <philb@gnu.org>, 2001.
 
    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/arm/fegetexcept.c b/sysdeps/arm/fegetexcept.c
index b061609c34..2f617f5370 100644
--- a/sysdeps/arm/fegetexcept.c
+++ b/sysdeps/arm/fegetexcept.c
@@ -1,7 +1,6 @@
 /* Get floating-point exceptions.
    Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Philip Blundell <philb@gnu.org>, 2001
 
    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/arm/feupdateenv.c b/sysdeps/arm/feupdateenv.c
index b742d9a279..8126e9ef99 100644
--- a/sysdeps/arm/feupdateenv.c
+++ b/sysdeps/arm/feupdateenv.c
@@ -1,7 +1,6 @@
 /* Install given floating-point environment and raise exceptions.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
    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/arm/fgetexcptflg.c b/sysdeps/arm/fgetexcptflg.c
index fe82543409..b4d3e87156 100644
--- a/sysdeps/arm/fgetexcptflg.c
+++ b/sysdeps/arm/fgetexcptflg.c
@@ -1,7 +1,6 @@
 /* Store current representation for exceptions.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
    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/arm/memcpy.S b/sysdeps/arm/memcpy.S
index 04e3f77391..8a83418fe6 100644
--- a/sysdeps/arm/memcpy.S
+++ b/sysdeps/arm/memcpy.S
@@ -1,7 +1,6 @@
 /* Copyright (C) 2006-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
-   Contributed by MontaVista Software, Inc. (written by Nicolas Pitre)
 
    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/arm/memmove.S b/sysdeps/arm/memmove.S
index b01164a7e8..9ae2bfd074 100644
--- a/sysdeps/arm/memmove.S
+++ b/sysdeps/arm/memmove.S
@@ -1,7 +1,6 @@
 /* Copyright (C) 2006-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
-   Contributed by MontaVista Software, Inc. (written by Nicolas Pitre)
 
    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/arm/memset.S b/sysdeps/arm/memset.S
index 02bc1221a1..dc89ca7da5 100644
--- a/sysdeps/arm/memset.S
+++ b/sysdeps/arm/memset.S
@@ -1,6 +1,5 @@
 /* Copyright (C) 1998-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Philip Blundell <philb@gnu.org>
 
    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/arm/strlen.S b/sysdeps/arm/strlen.S
index 2ac0a09c09..dbb6344739 100644
--- a/sysdeps/arm/strlen.S
+++ b/sysdeps/arm/strlen.S
@@ -1,6 +1,5 @@
 /* Copyright (C) 1998-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Code contributed by Matthew Wilcox <willy@odie.barnet.ac.uk>
 
    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/arm/unwind.h b/sysdeps/arm/unwind.h
index ffdea8047d..8532317c8a 100644
--- a/sysdeps/arm/unwind.h
+++ b/sysdeps/arm/unwind.h
@@ -1,6 +1,5 @@
 /* Header file for the ARM EABI unwinder
    Copyright (C) 2003-2021 Free Software Foundation, Inc.
-   Contributed by Paul Brook
 
    This file is free software; you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the