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>

15 files changed, 0 insertions, 19 deletions

diff --git a/sysdeps/m68k/m680x0/fpu/e_scalb.c b/sysdeps/m68k/m680x0/fpu/e_scalb.c
index e96c26e..4a380ca 100644
--- a/sysdeps/m68k/m680x0/fpu/e_scalb.c
+++ b/sysdeps/m68k/m680x0/fpu/e_scalb.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>.
 
    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/m68k/m680x0/fpu/fraiseexcpt.c b/sysdeps/m68k/m680x0/fpu/fraiseexcpt.c
index c4359e2..08d54ae 100644
--- a/sysdeps/m68k/m680x0/fpu/fraiseexcpt.c
+++ b/sysdeps/m68k/m680x0/fpu/fraiseexcpt.c
@@ -1,7 +1,6 @@
 /* Raise given exceptions.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
 
    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/m68k/m680x0/fpu/s_ccosh_template.c b/sysdeps/m68k/m680x0/fpu/s_ccosh_template.c
index b637323..bfdb147 100644
--- a/sysdeps/m68k/m680x0/fpu/s_ccosh_template.c
+++ b/sysdeps/m68k/m680x0/fpu/s_ccosh_template.c
@@ -1,7 +1,6 @@
 /* Complex cosine hyperbole function.  m68k fpu version
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>.
 
    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/m68k/m680x0/fpu/s_cexp_template.c b/sysdeps/m68k/m680x0/fpu/s_cexp_template.c
index 91729c1..c760fd5 100644
--- a/sysdeps/m68k/m680x0/fpu/s_cexp_template.c
+++ b/sysdeps/m68k/m680x0/fpu/s_cexp_template.c
@@ -1,7 +1,6 @@
 /* Complex exponential function.  m68k fpu version
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
 
    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/m68k/m680x0/fpu/s_csin_template.c b/sysdeps/m68k/m680x0/fpu/s_csin_template.c
index be48201..a76f766 100644
--- a/sysdeps/m68k/m680x0/fpu/s_csin_template.c
+++ b/sysdeps/m68k/m680x0/fpu/s_csin_template.c
@@ -1,7 +1,6 @@
 /* Complex sine function.  m68k fpu version
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>.
 
    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/m68k/m680x0/fpu/s_csinh_template.c b/sysdeps/m68k/m680x0/fpu/s_csinh_template.c
index cb47702..37f46cd 100644
--- a/sysdeps/m68k/m680x0/fpu/s_csinh_template.c
+++ b/sysdeps/m68k/m680x0/fpu/s_csinh_template.c
@@ -1,7 +1,6 @@
 /* Complex sine hyperbole function.  m68k fpu version
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>.
 
    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/m68k/m680x0/fpu/s_fpclassifyl.c b/sysdeps/m68k/m680x0/fpu/s_fpclassifyl.c
index cc87aa2..c0b77ca 100644
--- a/sysdeps/m68k/m680x0/fpu/s_fpclassifyl.c
+++ b/sysdeps/m68k/m680x0/fpu/s_fpclassifyl.c
@@ -1,8 +1,6 @@
 /* Return classification value corresponding to argument.  m68k version.
    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.
-   Fixed for m68k by Andreas Schwab <schwab@suse.de>.
 
    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/m68k/m680x0/fpu/s_llrint.c b/sysdeps/m68k/m680x0/fpu/s_llrint.c
index 17e8539..7c76ba6 100644
--- a/sysdeps/m68k/m680x0/fpu/s_llrint.c
+++ b/sysdeps/m68k/m680x0/fpu/s_llrint.c
@@ -2,7 +2,6 @@
    direction.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
 
    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/m68k/m680x0/fpu/s_llrintf.c b/sysdeps/m68k/m680x0/fpu/s_llrintf.c
index bd2fdec..96757df 100644
--- a/sysdeps/m68k/m680x0/fpu/s_llrintf.c
+++ b/sysdeps/m68k/m680x0/fpu/s_llrintf.c
@@ -2,7 +2,6 @@
    direction.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
 
    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/m68k/m680x0/fpu/s_llrintl.c b/sysdeps/m68k/m680x0/fpu/s_llrintl.c
index 3c436aa..a4e103d 100644
--- a/sysdeps/m68k/m680x0/fpu/s_llrintl.c
+++ b/sysdeps/m68k/m680x0/fpu/s_llrintl.c
@@ -2,7 +2,6 @@
    direction.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
 
    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/m68k/m680x0/fpu/s_logbl.c b/sysdeps/m68k/m680x0/fpu/s_logbl.c
index 2586622..8cd2326 100644
--- a/sysdeps/m68k/m680x0/fpu/s_logbl.c
+++ b/sysdeps/m68k/m680x0/fpu/s_logbl.c
@@ -1,6 +1,4 @@
 /* s_logbl.c -- long double version of s_logb.c.
- * Conversion to long double by Ulrich Drepper,
- * Cygnus Support, drepper@cygnus.com.
  */
 
 /*
diff --git a/sysdeps/m68k/m680x0/fpu/s_lrint_template.c b/sysdeps/m68k/m680x0/fpu/s_lrint_template.c
index a873d40..1a13878 100644
--- a/sysdeps/m68k/m680x0/fpu/s_lrint_template.c
+++ b/sysdeps/m68k/m680x0/fpu/s_lrint_template.c
@@ -2,7 +2,6 @@
    direction.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
 
    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/m68k/m680x0/fpu/s_nextafterl.c b/sysdeps/m68k/m680x0/fpu/s_nextafterl.c
index 76e9000..9cd0e25 100644
--- a/sysdeps/m68k/m680x0/fpu/s_nextafterl.c
+++ b/sysdeps/m68k/m680x0/fpu/s_nextafterl.c
@@ -1,7 +1,4 @@
 /* s_nextafterl.c -- long double version of s_nextafter.c.
- * Conversion to long double by Ulrich Drepper,
- * Cygnus Support, drepper@cygnus.com.
- * Fixed for m68k by Andreas Schwab <schwab@suse.de>.
  */
 
 /*
diff --git a/sysdeps/m68k/m680x0/fpu/s_remquo_template.c b/sysdeps/m68k/m680x0/fpu/s_remquo_template.c
index b3b649c..ae5a2c9 100644
--- a/sysdeps/m68k/m680x0/fpu/s_remquo_template.c
+++ b/sysdeps/m68k/m680x0/fpu/s_remquo_template.c
@@ -1,7 +1,6 @@
 /* Compute remainder and a congruent to the quotient.  m68k fpu version
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
 
    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/m68k/m680x0/m68020/atomic-machine.h b/sysdeps/m68k/m680x0/m68020/atomic-machine.h
index e81b48b..7c8c8e7 100644
--- a/sysdeps/m68k/m680x0/m68020/atomic-machine.h
+++ b/sysdeps/m68k/m680x0/m68020/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 Andreas Schwab <schwab@suse.de>, 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