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>

19 files changed, 0 insertions, 21 deletions

diff --git a/sysdeps/generic/atomic-machine.h b/sysdeps/generic/atomic-machine.h
index 7026c54d4e..e345bae4e7 100644
--- a/sysdeps/generic/atomic-machine.h
+++ b/sysdeps/generic/atomic-machine.h
@@ -1,6 +1,5 @@
 /* Copyright (C) 2003-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@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/sysdeps/generic/dl-librecon.h b/sysdeps/generic/dl-librecon.h
index 8d2ee12816..6f20dbd1a6 100644
--- a/sysdeps/generic/dl-librecon.h
+++ b/sysdeps/generic/dl-librecon.h
@@ -1,7 +1,6 @@
 /* Optional code to distinguish library flavours.
    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/sysdeps/generic/dl-procinfo.h b/sysdeps/generic/dl-procinfo.h
index ff9979e2a8..c3342532bb 100644
--- a/sysdeps/generic/dl-procinfo.h
+++ b/sysdeps/generic/dl-procinfo.h
@@ -1,7 +1,6 @@
 /* Stub version of processor capability information handling macros.
    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/sysdeps/generic/dwarf2.h b/sysdeps/generic/dwarf2.h
index 0d08da02b7..4b8555525a 100644
--- a/sysdeps/generic/dwarf2.h
+++ b/sysdeps/generic/dwarf2.h
@@ -1,8 +1,6 @@
 /* Declarations and definitions of codes relating to the DWARF2 symbolic
    debugging information format.
    Copyright (C) 1992-2021 Free Software Foundation, Inc.
-   Contributed by Gary Funck (gary@intrepid.com).  Derived from the
-   DWARF 1 implementation written by Ron Guilmette (rfg@monkeys.com).
 
    This file is part of the GNU C Library.
 
diff --git a/sysdeps/generic/framestate.c b/sysdeps/generic/framestate.c
index 54c4817f37..a8f5e3b41f 100644
--- a/sysdeps/generic/framestate.c
+++ b/sysdeps/generic/framestate.c
@@ -1,7 +1,6 @@
 /* __frame_state_for unwinder helper function wrapper.
    Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.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/sysdeps/generic/hp-timing-common.h b/sysdeps/generic/hp-timing-common.h
index d59a27d49c..9d32d45563 100644
--- a/sysdeps/generic/hp-timing-common.h
+++ b/sysdeps/generic/hp-timing-common.h
@@ -1,7 +1,6 @@
 /* High precision, low overhead timing functions.  Generic version.
    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/sysdeps/generic/hp-timing.h b/sysdeps/generic/hp-timing.h
index 8e8d0c10f3..27644ac5c9 100644
--- a/sysdeps/generic/hp-timing.h
+++ b/sysdeps/generic/hp-timing.h
@@ -1,7 +1,6 @@
 /* High precision, low overhead timing functions.  Generic version.
    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/sysdeps/generic/ifreq.h b/sysdeps/generic/ifreq.h
index 6d2b2e0ac8..547314a13c 100644
--- a/sysdeps/generic/ifreq.h
+++ b/sysdeps/generic/ifreq.h
@@ -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@suse.de>.
 
    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/sysdeps/generic/ldconfig.h b/sysdeps/generic/ldconfig.h
index 3ab757077d..371d97eca2 100644
--- a/sysdeps/generic/ldconfig.h
+++ b/sysdeps/generic/ldconfig.h
@@ -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@suse.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/sysdeps/generic/memcopy.h b/sysdeps/generic/memcopy.h
index 9be77fa7c5..1b0577ff2b 100644
--- a/sysdeps/generic/memcopy.h
+++ b/sysdeps/generic/memcopy.h
@@ -1,7 +1,6 @@
 /* memcopy.h -- definitions for memory copy functions.  Generic C version.
    Copyright (C) 1991-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Torbjorn Granlund (tege@sics.se).
 
    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/sysdeps/generic/not-cancel.h b/sysdeps/generic/not-cancel.h
index 8a3772a1fe..8dad20c7af 100644
--- a/sysdeps/generic/not-cancel.h
+++ b/sysdeps/generic/not-cancel.h
@@ -1,7 +1,6 @@
 /* Uncancelable versions of cancelable interfaces.  Generic version.
    Copyright (C) 2003-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@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/sysdeps/generic/register-dump.h b/sysdeps/generic/register-dump.h
index c03eb2ef9d..4554fb1ecd 100644
--- a/sysdeps/generic/register-dump.h
+++ b/sysdeps/generic/register-dump.h
@@ -1,7 +1,6 @@
 /* Dump registers.
    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/sysdeps/generic/sigcontextinfo.h b/sysdeps/generic/sigcontextinfo.h
index 0da7e26f72..eca7ba68eb 100644
--- a/sysdeps/generic/sigcontextinfo.h
+++ b/sysdeps/generic/sigcontextinfo.h
@@ -1,6 +1,5 @@
 /* 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/sysdeps/generic/sigset-cvt-mask.h b/sysdeps/generic/sigset-cvt-mask.h
index 3dfdfe8f71..9a0dc2a998 100644
--- a/sysdeps/generic/sigset-cvt-mask.h
+++ b/sysdeps/generic/sigset-cvt-mask.h
@@ -2,7 +2,6 @@
    Generic version.
    Copyright (C) 1998-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Joe Keane <jgk@jgk.org>.
 
    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/sysdeps/generic/unwind-dw2-fde-glibc.c b/sysdeps/generic/unwind-dw2-fde-glibc.c
index 0400f3c731..7a01a09ff0 100644
--- a/sysdeps/generic/unwind-dw2-fde-glibc.c
+++ b/sysdeps/generic/unwind-dw2-fde-glibc.c
@@ -1,5 +1,4 @@
 /* Copyright (C) 2001-2021 Free Software Foundation, Inc.
-   Contributed by Jakub Jelinek <jakub@redhat.com>.
 
    This file is part of the GNU C Library.
 
diff --git a/sysdeps/generic/unwind-dw2-fde.c b/sysdeps/generic/unwind-dw2-fde.c
index 8724b7b337..5354359d05 100644
--- a/sysdeps/generic/unwind-dw2-fde.c
+++ b/sysdeps/generic/unwind-dw2-fde.c
@@ -1,6 +1,5 @@
 /* Subroutines needed for unwinding stack frames for exception handling.  */
 /* Copyright (C) 1997-2021 Free Software Foundation, Inc.
-   Contributed by Jason Merrill <jason@cygnus.com>.
 
    This file is part of the GNU C Library.
 
diff --git a/sysdeps/generic/unwind-dw2-fde.h b/sysdeps/generic/unwind-dw2-fde.h
index d6190762ea..837df3c97e 100644
--- a/sysdeps/generic/unwind-dw2-fde.h
+++ b/sysdeps/generic/unwind-dw2-fde.h
@@ -1,6 +1,5 @@
 /* Subroutines needed for unwinding stack frames for exception handling.  */
 /* Copyright (C) 1997-2021 Free Software Foundation, Inc.
-   Contributed by Jason Merrill <jason@cygnus.com>.
 
    This file is part of the GNU C Library.
 
diff --git a/sysdeps/generic/unwind-resume.c b/sysdeps/generic/unwind-resume.c
index 66dbb67e81..9f57f793af 100644
--- a/sysdeps/generic/unwind-resume.c
+++ b/sysdeps/generic/unwind-resume.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 2003-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@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 License as
diff --git a/sysdeps/generic/utmp-equal.h b/sysdeps/generic/utmp-equal.h
index b1c4f008b9..857f1442da 100644
--- a/sysdeps/generic/utmp-equal.h
+++ b/sysdeps/generic/utmp-equal.h
@@ -1,8 +1,6 @@
 /* Helper function for utmp functions to see if two entries are equal.
    Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>
-   and Paul Janzen <pcj@primenet.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