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>

14 files changed, 0 insertions, 15 deletions

diff --git a/misc/dirname.c b/misc/dirname.c
index b6c3d79..54da231 100644
--- a/misc/dirname.c
+++ b/misc/dirname.c
@@ -1,7 +1,6 @@
 /* dirname - return directory part of PATH.
    Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
    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/misc/getsysstats.c b/misc/getsysstats.c
index 0eedfac..2986d62 100644
--- a/misc/getsysstats.c
+++ b/misc/getsysstats.c
@@ -1,7 +1,6 @@
 /* getsysstats - Determine various system internal values, stub version.
    Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
    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/misc/hsearch.c b/misc/hsearch.c
index 2ab9908..0db27f8 100644
--- a/misc/hsearch.c
+++ b/misc/hsearch.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 1993-2021 Free Software Foundation, Inc.
-   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>
    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/misc/hsearch_r.c b/misc/hsearch_r.c
index d27f480..47d31e2 100644
--- a/misc/hsearch_r.c
+++ b/misc/hsearch_r.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 1993-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1993.
 
    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/misc/lsearch.c b/misc/lsearch.c
index 8c751b7..74e0edb 100644
--- a/misc/lsearch.c
+++ b/misc/lsearch.c
@@ -1,7 +1,6 @@
 /* Linear search functions.
    Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
    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/misc/pselect.c b/misc/pselect.c
index f2861b8..9ce03d2 100644
--- a/misc/pselect.c
+++ b/misc/pselect.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
    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/misc/regexp.c b/misc/regexp.c
index ba74875..ab1403d 100644
--- a/misc/regexp.c
+++ b/misc/regexp.c
@@ -1,7 +1,6 @@
 /* Compatibility symbols for the obsolete <regexp.h> interface.
    Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
    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/misc/regexp.h b/misc/regexp.h
index 923030e..d7cc231 100644
--- a/misc/regexp.h
+++ b/misc/regexp.h
@@ -1,6 +1,5 @@
 /* Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
    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/misc/tsearch.c b/misc/tsearch.c
index 0e3b4e0..550772c 100644
--- a/misc/tsearch.c
+++ b/misc/tsearch.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 1995-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>, 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/misc/tst-atomic-long.c b/misc/tst-atomic-long.c
index cdb9c3a..e5289c5 100644
--- a/misc/tst-atomic-long.c
+++ b/misc/tst-atomic-long.c
@@ -1,7 +1,6 @@
 /* Tests for atomic.h macros.
    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/misc/tst-atomic.c b/misc/tst-atomic.c
index 175916c..e9debaa 100644
--- a/misc/tst-atomic.c
+++ b/misc/tst-atomic.c
@@ -1,7 +1,6 @@
 /* Tests for atomic.h macros.
    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/misc/tst-dirname.c b/misc/tst-dirname.c
index dad28f3..82cfe41 100644
--- a/misc/tst-dirname.c
+++ b/misc/tst-dirname.c
@@ -1,7 +1,6 @@
 /* Test program for dirname function a la XPG.
    Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
    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/misc/tst-fdset.c b/misc/tst-fdset.c
index a7e60ae..bcf9f48 100644
--- a/misc/tst-fdset.c
+++ b/misc/tst-fdset.c
@@ -1,7 +1,6 @@
 /* Test FD* macros.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Robert Bihlmeyer <robbe@orcus.priv.at>.
 
    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/misc/tst-mntent.c b/misc/tst-mntent.c
index b6ad8af..493cef4 100644
--- a/misc/tst-mntent.c
+++ b/misc/tst-mntent.c
@@ -1,5 +1,3 @@
-/* Test case by Horst von Brand <vonbrand@sleipnir.valparaiso.cl>
-   and Ulrich Drepper <drepper@cygnus.com>.  */
 #include <mntent.h>
 #include <stdio.h>
 #include <string.h>