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>

17 files changed, 0 insertions, 20 deletions

diff --git a/malloc/arena.c b/malloc/arena.c
index 667484630e..4c398753ae 100644
--- a/malloc/arena.c
+++ b/malloc/arena.c
@@ -1,7 +1,6 @@
 /* Malloc implementation for multiple threads without lock contention.
    Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Wolfram Gloger <wg@malloc.de>, 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 License as
diff --git a/malloc/hooks.c b/malloc/hooks.c
index 2761e4739b..070f01da43 100644
--- a/malloc/hooks.c
+++ b/malloc/hooks.c
@@ -1,7 +1,6 @@
 /* Compatibility code for malloc debugging and state management.
    Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Wolfram Gloger <wg@malloc.de>, 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 License as
diff --git a/malloc/malloc-check.c b/malloc/malloc-check.c
index 8ed67de3ff..4bb00212bb 100644
--- a/malloc/malloc-check.c
+++ b/malloc/malloc-check.c
@@ -1,7 +1,6 @@
 /* glibc.malloc.check implementation.
    Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Wolfram Gloger <wg@malloc.de>, 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 License as
diff --git a/malloc/malloc.c b/malloc/malloc.c
index e065785af7..2ba1fee144 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -1,8 +1,6 @@
 /* Malloc implementation for multiple threads without lock contention.
    Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Wolfram Gloger <wg@malloc.de>
-   and Doug Lea <dl@cs.oswego.edu>, 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 License as
diff --git a/malloc/mcheck-impl.c b/malloc/mcheck-impl.c
index 6597a290a6..729e94cd0f 100644
--- a/malloc/mcheck-impl.c
+++ b/malloc/mcheck-impl.c
@@ -1,7 +1,6 @@
 /* mcheck debugging hooks for malloc.
    Copyright (C) 1990-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Written May 1989 by Mike Haertel.
 
    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/malloc/mcheck.c b/malloc/mcheck.c
index 74c20ffe25..ed3c39d406 100644
--- a/malloc/mcheck.c
+++ b/malloc/mcheck.c
@@ -1,7 +1,6 @@
 /* The mcheck() interface.
    Copyright (C) 1990-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Written May 1989 by Mike Haertel.
 
    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/malloc/memusage.c b/malloc/memusage.c
index 4e57ad338c..e99f0c1c14 100644
--- a/malloc/memusage.c
+++ b/malloc/memusage.c
@@ -1,7 +1,6 @@
 /* Profile heap and stack memory usage of running program.
    Copyright (C) 1998-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
 
    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/malloc/memusage.sh b/malloc/memusage.sh
index 0645f09911..f93ddcaf78 100755
--- a/malloc/memusage.sh
+++ b/malloc/memusage.sh
@@ -1,7 +1,6 @@
 #!/bin/bash
 # Copyright (C) 1999-2021 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
-# Contributed by Ulrich Drepper <drepper@gnu.org>, 1999.
 
 # 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/malloc/memusagestat.c b/malloc/memusagestat.c
index 4c823b94f6..f888168297 100644
--- a/malloc/memusagestat.c
+++ b/malloc/memusagestat.c
@@ -1,7 +1,6 @@
 /* Generate graphic from memory profiling data.
    Copyright (C) 1998-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published
diff --git a/malloc/mtrace-impl.c b/malloc/mtrace-impl.c
index f5f19c265c..a3db927039 100644
--- a/malloc/mtrace-impl.c
+++ b/malloc/mtrace-impl.c
@@ -1,8 +1,6 @@
 /* mtrace implementation for `malloc'.
    Copyright (C) 1991-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-                 Written April 2, 1991 by John Gilmore of Cygnus Support.
-                 Based on mcheck.c by Mike Haertel.
 
    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/malloc/mtrace.c b/malloc/mtrace.c
index c1c836a740..b276e83399 100644
--- a/malloc/mtrace.c
+++ b/malloc/mtrace.c
@@ -1,8 +1,6 @@
 /* mtrace API for `malloc'.
    Copyright (C) 1991-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-                 Written April 2, 1991 by John Gilmore of Cygnus Support.
-                 Based on mcheck.c by Mike Haertel.
 
    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/malloc/mtrace.pl b/malloc/mtrace.pl
index b1073a1931..0244d64c87 100644
--- a/malloc/mtrace.pl
+++ b/malloc/mtrace.pl
@@ -3,7 +3,6 @@ eval "exec @PERL@ -S $0 $@"
     if 0;
 # Copyright (C) 1997-2021 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
-# Contributed by Ulrich Drepper <drepper@gnu.org>, 1997.
 # Based on the mtrace.awk script.
 
 # The GNU C Library is free software; you can redistribute it and/or
diff --git a/malloc/tst-calloc.c b/malloc/tst-calloc.c
index 24a083dfe1..6e06e3c688 100644
--- a/malloc/tst-calloc.c
+++ b/malloc/tst-calloc.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@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/malloc/tst-malloc-check.c b/malloc/tst-malloc-check.c
index 6650d09cf6..e00a16e649 100644
--- a/malloc/tst-malloc-check.c
+++ b/malloc/tst-malloc-check.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 2005-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2005.
 
    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/malloc/tst-malloc.c b/malloc/tst-malloc.c
index a587cbded6..396e6f6ebb 100644
--- a/malloc/tst-malloc.c
+++ b/malloc/tst-malloc.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1999.
 
    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/malloc/tst-mallocstate.c b/malloc/tst-mallocstate.c
index ba726505e7..ba79189f06 100644
--- a/malloc/tst-mallocstate.c
+++ b/malloc/tst-mallocstate.c
@@ -1,7 +1,6 @@
 /* Emulate Emacs heap dumping to test malloc_set_state.
    Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Wolfram Gloger <wg@malloc.de>, 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/malloc/tst-obstack.c b/malloc/tst-obstack.c
index ee1385d0f7..18af8ea62f 100644
--- a/malloc/tst-obstack.c
+++ b/malloc/tst-obstack.c
@@ -1,4 +1,3 @@
-/* Test case by Alexandre Duret-Lutz <duret_g@epita.fr>.  */
 #include <obstack.h>
 #include <stdint.h>
 #include <stdio.h>