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>

18 files changed, 0 insertions, 20 deletions

diff --git a/libio/bug-ungetc4.c b/libio/bug-ungetc4.c
index d4fa415a9e..4ddd4ba040 100644
--- a/libio/bug-ungetc4.c
+++ b/libio/bug-ungetc4.c
@@ -1,7 +1,6 @@
 /* Test program for ungetc/fseekpos interaction.
    Copyright (C) 2004-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
 
    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/libio/fileops.c b/libio/fileops.c
index e8ee374821..0986059e7b 100644
--- a/libio/fileops.c
+++ b/libio/fileops.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 1993-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Written by Per Bothner <bothner@cygnus.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/libio/iopopen.c b/libio/iopopen.c
index 6b04222c24..0266d19870 100644
--- a/libio/iopopen.c
+++ b/libio/iopopen.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 1993-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Written by Per Bothner <bothner@cygnus.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/libio/libio.h b/libio/libio.h
index cebdc65763..b7cfe1cb7c 100644
--- a/libio/libio.h
+++ b/libio/libio.h
@@ -1,6 +1,5 @@
 /* Copyright (C) 1991-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Written by Per Bothner <bothner@cygnus.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/libio/obprintf.c b/libio/obprintf.c
index 4333276a1b..e0b61cc431 100644
--- a/libio/obprintf.c
+++ b/libio/obprintf.c
@@ -1,7 +1,6 @@
 /* Print output of stream to given obstack.
    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/libio/oldfileops.c b/libio/oldfileops.c
index ed3c98bd6d..453f54bd51 100644
--- a/libio/oldfileops.c
+++ b/libio/oldfileops.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 1993-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Written by Per Bothner <bothner@cygnus.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/libio/oldfmemopen.c b/libio/oldfmemopen.c
index 6e415351c9..a8c14b394f 100644
--- a/libio/oldfmemopen.c
+++ b/libio/oldfmemopen.c
@@ -1,7 +1,6 @@
 /* Fmemopen implementation.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Hanno Mueller, kontakt@hanno.de, 2000.
 
    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/libio/oldiopopen.c b/libio/oldiopopen.c
index 68ca52c012..c8b52c1e54 100644
--- a/libio/oldiopopen.c
+++ b/libio/oldiopopen.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 1998-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Written by Per Bothner <bothner@cygnus.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/libio/test-fmemopen.c b/libio/test-fmemopen.c
index 7a6ffb32a9..a26181bea3 100644
--- a/libio/test-fmemopen.c
+++ b/libio/test-fmemopen.c
@@ -1,7 +1,6 @@
 /* Test for fmemopen implementation.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Hanno Mueller, kontakt@hanno.de, 2000.
 
    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/libio/tst-fopenloc.c b/libio/tst-fopenloc.c
index 6e417e6a67..f0e52e1565 100644
--- a/libio/tst-fopenloc.c
+++ b/libio/tst-fopenloc.c
@@ -1,7 +1,6 @@
 /* Test for ,ccs= handling in fopen.
    Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 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/libio/tst-freopen.c b/libio/tst-freopen.c
index c8bc0a3d07..1aba147941 100644
--- a/libio/tst-freopen.c
+++ b/libio/tst-freopen.c
@@ -1,7 +1,6 @@
 /* Test freopen with mmap stdio.
    Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
 
    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/libio/tst-mmap-setvbuf.c b/libio/tst-mmap-setvbuf.c
index aa9ed4b558..816b3fca9d 100644
--- a/libio/tst-mmap-setvbuf.c
+++ b/libio/tst-mmap-setvbuf.c
@@ -1,7 +1,6 @@
 /* Test setvbuf on readonly fopen (using mmap stdio).
    Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
 
    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/libio/tst-widetext.c b/libio/tst-widetext.c
index 64b8f4a2f8..2e7dfceeb1 100644
--- a/libio/tst-widetext.c
+++ b/libio/tst-widetext.c
@@ -2,7 +2,6 @@
    amounts of text.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.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/libio/tst_getwc.c b/libio/tst_getwc.c
index 420f54a0d3..618326a7e6 100644
--- a/libio/tst_getwc.c
+++ b/libio/tst_getwc.c
@@ -1,7 +1,6 @@
 /* Simple test of getwc in the C locale.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
 
    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/libio/tst_putwc.c b/libio/tst_putwc.c
index 2a6a4c738c..1f5f98295f 100644
--- a/libio/tst_putwc.c
+++ b/libio/tst_putwc.c
@@ -1,7 +1,6 @@
 /* Simple test of putwc in the C locale.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
 
    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/libio/tst_wprintf2.c b/libio/tst_wprintf2.c
index dfff70f1f9..de19ae3781 100644
--- a/libio/tst_wprintf2.c
+++ b/libio/tst_wprintf2.c
@@ -1,4 +1,3 @@
-/* Test case by Yoshito Kawada <KAWADA@jp.ibm.com>.  */
 #include <errno.h>
 #include <error.h>
 #include <fcntl.h>
diff --git a/libio/wfileops.c b/libio/wfileops.c
index 37f44780f8..be7b8df7ff 100644
--- a/libio/wfileops.c
+++ b/libio/wfileops.c
@@ -1,7 +1,5 @@
 /* Copyright (C) 1993-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Written by Ulrich Drepper <drepper@cygnus.com>.
-   Based on the single byte version by Per Bothner <bothner@cygnus.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/libio/wgenops.c b/libio/wgenops.c
index 106ddfd278..75c27b22a9 100644
--- a/libio/wgenops.c
+++ b/libio/wgenops.c
@@ -1,7 +1,5 @@
 /* Copyright (C) 1993-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Written by Ulrich Drepper <drepper@cygnus.com>.
-   Based on the single byte version by Per Bothner <bothner@cygnus.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