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 b6c3d79593..54da23163e 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 0eedface6d..2986d62247 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 2ab990878e..0db27f845c 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 d27f4807c8..47d31e2504 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 8c751b74a9..74e0edbe17 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 f2861b8556..9ce03d2a23 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 ba748756bf..ab1403de44 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 923030ef1e..d7cc231d85 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 0e3b4e0bfe..550772cdaa 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 cdb9c3aea1..e5289c5e5c 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 175916c130..e9debaa85f 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 dad28f3360..82cfe415bd 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 a7e60ae1bb..bcf9f485ec 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 b6ad8afcc6..493cef419e 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>