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>

7 files changed, 0 insertions, 9 deletions

diff --git a/sysdeps/unix/sysv/linux/hppa/atomic-machine.h b/sysdeps/unix/sysv/linux/hppa/atomic-machine.h
index 1fcb1852e8..e9edc0e7bc 100644
--- a/sysdeps/unix/sysv/linux/hppa/atomic-machine.h
+++ b/sysdeps/unix/sysv/linux/hppa/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 Carlos O'Donell <carlos@baldric.uwo.ca>, 2005.
 
    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/unix/sysv/linux/hppa/clone.S b/sysdeps/unix/sysv/linux/hppa/clone.S
index 1948602cc9..303647fb39 100644
--- a/sysdeps/unix/sysv/linux/hppa/clone.S
+++ b/sysdeps/unix/sysv/linux/hppa/clone.S
@@ -1,7 +1,5 @@
 /* Copyright (C) 1996-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by David Huggins-Daines <dhd@debian.org>, 2000.
-   Based on the Alpha version by Richard Henderson <rth@tamu.edu>, 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/sysdeps/unix/sysv/linux/hppa/getcontext.S b/sysdeps/unix/sysv/linux/hppa/getcontext.S
index 1405b42819..d9ed74666c 100644
--- a/sysdeps/unix/sysv/linux/hppa/getcontext.S
+++ b/sysdeps/unix/sysv/linux/hppa/getcontext.S
@@ -1,7 +1,6 @@
 /* Get current user context.
    Copyright (C) 2008-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Helge Deller <deller@gmx.de>, 2008.
 
    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/unix/sysv/linux/hppa/makecontext.c b/sysdeps/unix/sysv/linux/hppa/makecontext.c
index a80e764151..1a98734e1b 100644
--- a/sysdeps/unix/sysv/linux/hppa/makecontext.c
+++ b/sysdeps/unix/sysv/linux/hppa/makecontext.c
@@ -1,7 +1,6 @@
 /* Create new context.
    Copyright (C) 2008-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Helge Deller <deller@gmx.de>, 2008.
 
    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/unix/sysv/linux/hppa/setcontext.S b/sysdeps/unix/sysv/linux/hppa/setcontext.S
index 8fc5f5e56c..1e63277572 100644
--- a/sysdeps/unix/sysv/linux/hppa/setcontext.S
+++ b/sysdeps/unix/sysv/linux/hppa/setcontext.S
@@ -1,7 +1,6 @@
 /* Install given context.
    Copyright (C) 2008-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Helge Deller <deller@gmx.de>, 2008.
 
    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/unix/sysv/linux/hppa/swapcontext.c b/sysdeps/unix/sysv/linux/hppa/swapcontext.c
index f9a8207543..ce74f1a73e 100644
--- a/sysdeps/unix/sysv/linux/hppa/swapcontext.c
+++ b/sysdeps/unix/sysv/linux/hppa/swapcontext.c
@@ -1,7 +1,6 @@
 /* Swap to new context.
    Copyright (C) 2008-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Helge Deller <deller@gmx.de>, 2008.
 
    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/unix/sysv/linux/hppa/sysdep.h b/sysdeps/unix/sysv/linux/hppa/sysdep.h
index 779bc85e26..506916e693 100644
--- a/sysdeps/unix/sysv/linux/hppa/sysdep.h
+++ b/sysdeps/unix/sysv/linux/hppa/sysdep.h
@@ -1,8 +1,6 @@
 /* Assembler macros for PA-RISC.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper, <drepper@cygnus.com>, August 1999.
-   Linux/PA-RISC changes by Philipp Rumpf, <prumpf@tux.org>, March 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