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>

32 files changed, 0 insertions, 32 deletions

diff --git a/nss/XXX-lookup.c b/nss/XXX-lookup.c
index f1c97f7..302c636 100644
--- a/nss/XXX-lookup.c
+++ b/nss/XXX-lookup.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/nss/alias-lookup.c b/nss/alias-lookup.c
index 6348e3c..31ac2c9 100644
--- a/nss/alias-lookup.c
+++ b/nss/alias-lookup.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/nss/databases.def b/nss/databases.def
index 3dc9564..e33a5d0 100644
--- a/nss/databases.def
+++ b/nss/databases.def
@@ -1,7 +1,6 @@
 /* List of all databases defined for the NSS in GNU C Library.
    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/nss/db-Makefile b/nss/db-Makefile
index 2650ce8..c162db7 100644
--- a/nss/db-Makefile
+++ b/nss/db-Makefile
@@ -1,7 +1,6 @@
 # Makefile to (re-)generate db versions of system database files.
 # 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
diff --git a/nss/digits_dots.c b/nss/digits_dots.c
index f53dc94..c9ba042 100644
--- a/nss/digits_dots.c
+++ b/nss/digits_dots.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by H.J. Lu <hjl@gnu.ai.mit.edu>, 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/nss/ethers-lookup.c b/nss/ethers-lookup.c
index 08560e0..177d551 100644
--- a/nss/ethers-lookup.c
+++ b/nss/ethers-lookup.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/nss/getXXbyYY_r.c b/nss/getXXbyYY_r.c
index c344528..d04204e 100644
--- a/nss/getXXbyYY_r.c
+++ b/nss/getXXbyYY_r.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/nss/getXXent_r.c b/nss/getXXent_r.c
index c8443c5..4ee4800 100644
--- a/nss/getXXent_r.c
+++ b/nss/getXXent_r.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/nss/getent.c b/nss/getent.c
index ec48ba4..e428d0e 100644
--- a/nss/getent.c
+++ b/nss/getent.c
@@ -1,6 +1,5 @@
 /* Copyright (c) 1998-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Thorsten Kukuk <kukuk@suse.de>, 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/nss/grp-lookup.c b/nss/grp-lookup.c
index 034fa2a..e77988e 100644
--- a/nss/grp-lookup.c
+++ b/nss/grp-lookup.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/nss/hosts-lookup.c b/nss/hosts-lookup.c
index 1acafd0..925792b 100644
--- a/nss/hosts-lookup.c
+++ b/nss/hosts-lookup.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/nss/key-lookup.c b/nss/key-lookup.c
index aa267d3..0c15439 100644
--- a/nss/key-lookup.c
+++ b/nss/key-lookup.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/nss/makedb.c b/nss/makedb.c
index 8690e11..30c3d04 100644
--- a/nss/makedb.c
+++ b/nss/makedb.c
@@ -1,7 +1,6 @@
 /* Create simple DB database from textual input.
    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/nss/netgrp-lookup.c b/nss/netgrp-lookup.c
index ce37b5e..4695345 100644
--- a/nss/netgrp-lookup.c
+++ b/nss/netgrp-lookup.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/nss/network-lookup.c b/nss/network-lookup.c
index eed4dc3..868883f 100644
--- a/nss/network-lookup.c
+++ b/nss/network-lookup.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/nss/nss_compat/compat-grp.c b/nss/nss_compat/compat-grp.c
index aaf35e7..dcfc46a 100644
--- a/nss/nss_compat/compat-grp.c
+++ b/nss/nss_compat/compat-grp.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Thorsten Kukuk <kukuk@suse.de>, 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/nss/nss_compat/compat-initgroups.c b/nss/nss_compat/compat-initgroups.c
index c3b065c..a5d8b23 100644
--- a/nss/nss_compat/compat-initgroups.c
+++ b/nss/nss_compat/compat-initgroups.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 1998-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Thorsten Kukuk <kukuk@suse.de>, 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/nss/nss_compat/compat-pwd.c b/nss/nss_compat/compat-pwd.c
index 64d708f..3620879 100644
--- a/nss/nss_compat/compat-pwd.c
+++ b/nss/nss_compat/compat-pwd.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 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/nss/nss_compat/compat-spwd.c b/nss/nss_compat/compat-spwd.c
index b548dfb..edabc3c 100644
--- a/nss/nss_compat/compat-spwd.c
+++ b/nss/nss_compat/compat-spwd.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 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/nss/nss_db/db-initgroups.c b/nss/nss_db/db-initgroups.c
index f09059b..1e93f79 100644
--- a/nss/nss_db/db-initgroups.c
+++ b/nss/nss_db/db-initgroups.c
@@ -1,7 +1,6 @@
 /* Initgroups handling in nss_db module.
    Copyright (C) 2011-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@gmail.com>.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public License as
diff --git a/nss/nss_db/db-netgrp.c b/nss/nss_db/db-netgrp.c
index 436cafc..268a323 100644
--- a/nss/nss_db/db-netgrp.c
+++ b/nss/nss_db/db-netgrp.c
@@ -1,7 +1,6 @@
 /* Netgroup file parser in nss_db modules.
    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/nss/nss_files/files-alias.c b/nss/nss_files/files-alias.c
index 2a4023b..b87add1 100644
--- a/nss/nss_files/files-alias.c
+++ b/nss/nss_files/files-alias.c
@@ -1,7 +1,6 @@
 /* Mail alias file parser in nss_files module.
    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/nss/nss_files/files-netgrp.c b/nss/nss_files/files-netgrp.c
index 82cc201..f588fa6 100644
--- a/nss/nss_files/files-netgrp.c
+++ b/nss/nss_files/files-netgrp.c
@@ -1,7 +1,6 @@
 /* Netgroup file parser in nss_files modules.
    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/nss/nss_hash.c b/nss/nss_hash.c
index d5e74a1..9d296fe 100644
--- a/nss/nss_hash.c
+++ b/nss/nss_hash.c
@@ -1,6 +1,5 @@
 /* Copyright (c) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Thorsten Kukuk <kukuk@suse.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/nss/nsswitch.c b/nss/nsswitch.c
index 6b7d4c7..5d1ade5 100644
--- a/nss/nsswitch.c
+++ b/nss/nsswitch.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/nss/proto-lookup.c b/nss/proto-lookup.c
index a316592..8c13cf1 100644
--- a/nss/proto-lookup.c
+++ b/nss/proto-lookup.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/nss/pwd-lookup.c b/nss/pwd-lookup.c
index 5ec8a8b..724a697 100644
--- a/nss/pwd-lookup.c
+++ b/nss/pwd-lookup.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/nss/rpc-lookup.c b/nss/rpc-lookup.c
index 4af8571..83d062d 100644
--- a/nss/rpc-lookup.c
+++ b/nss/rpc-lookup.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/nss/service-lookup.c b/nss/service-lookup.c
index 57f068f..4d8ba5f 100644
--- a/nss/service-lookup.c
+++ b/nss/service-lookup.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/nss/sgrp-lookup.c b/nss/sgrp-lookup.c
index 9a2becc..3897d9e 100644
--- a/nss/sgrp-lookup.c
+++ b/nss/sgrp-lookup.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 2009-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2009.
 
    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/nss/spwd-lookup.c b/nss/spwd-lookup.c
index e9e661a..afcee00 100644
--- a/nss/spwd-lookup.c
+++ b/nss/spwd-lookup.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/nss/test-netdb.c b/nss/test-netdb.c
index d417c0b..154a69d 100644
--- a/nss/test-netdb.c
+++ b/nss/test-netdb.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 1998-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Jaeger <aj@suse.de>, 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