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, 22 deletions

diff --git a/stdio-common/_i18n_number.h b/stdio-common/_i18n_number.h
index 20d71a7..eca0b82 100644
--- a/stdio-common/_i18n_number.h
+++ b/stdio-common/_i18n_number.h
@@ -1,6 +1,5 @@
 /* Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@gnu.org>, 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/stdio-common/_itoa.c b/stdio-common/_itoa.c
index c37d1c3..7e5b749 100644
--- a/stdio-common/_itoa.c
+++ b/stdio-common/_itoa.c
@@ -1,8 +1,6 @@
 /* Internal function for converting integers to ASCII.
    Copyright (C) 1994-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Torbjorn Granlund <tege@matematik.su.se>
-   and Ulrich Drepper <drepper@gnu.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/stdio-common/_itowa.c b/stdio-common/_itowa.c
index 35ad694..c572719 100644
--- a/stdio-common/_itowa.c
+++ b/stdio-common/_itowa.c
@@ -1,8 +1,6 @@
 /* Internal function for converting integers to ASCII.
    Copyright (C) 1994-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Torbjorn Granlund <tege@matematik.su.se>
-   and Ulrich Drepper <drepper@gnu.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/stdio-common/bug-vfprintf-nargs.c b/stdio-common/bug-vfprintf-nargs.c
index 6e01c81..f1dc4d5 100644
--- a/stdio-common/bug-vfprintf-nargs.c
+++ b/stdio-common/bug-vfprintf-nargs.c
@@ -1,7 +1,6 @@
 /* Test for vfprintf nargs allocation overflow (BZ #13656).
    Copyright (C) 2012-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Kees Cook <keescook@chromium.org>, 2012.
 
    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/stdio-common/bug14.c b/stdio-common/bug14.c
index 317d496..69a5b0b 100644
--- a/stdio-common/bug14.c
+++ b/stdio-common/bug14.c
@@ -1,4 +1,3 @@
-/* Test case by Al Viro <aviro@redhat.com>.  */
 #include <locale.h>
 #include <wchar.h>
 #include <stdio.h>
diff --git a/stdio-common/fxprintf.c b/stdio-common/fxprintf.c
index 06daeb6..ce32603 100644
--- a/stdio-common/fxprintf.c
+++ b/stdio-common/fxprintf.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 2005-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@gnu.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/stdio-common/printf_fp.c b/stdio-common/printf_fp.c
index 70e5993..75bbadb 100644
--- a/stdio-common/printf_fp.c
+++ b/stdio-common/printf_fp.c
@@ -2,7 +2,6 @@
    Copyright (C) 1995-2021 Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
-   Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
 
    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/stdio-common/printf_fphex.c b/stdio-common/printf_fphex.c
index 74fc354..c3cab6c 100644
--- a/stdio-common/printf_fphex.c
+++ b/stdio-common/printf_fphex.c
@@ -1,7 +1,6 @@
 /* Print floating point number in hexadecimal notation according to ISO C99.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 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/stdio-common/printf_size.c b/stdio-common/printf_size.c
index 13a65ac..056f276 100644
--- a/stdio-common/printf_size.c
+++ b/stdio-common/printf_size.c
@@ -1,8 +1,6 @@
 /* Print size value using units for orders of magnitude.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
-   Based on a proposal by Larry McVoy <lm@sgi.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/stdio-common/scanf11.c b/stdio-common/scanf11.c
index 7701a98..bf45e4c 100644
--- a/stdio-common/scanf11.c
+++ b/stdio-common/scanf11.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@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/stdio-common/test-vfprintf.c b/stdio-common/test-vfprintf.c
index 1d77185..7c67cfe 100644
--- a/stdio-common/test-vfprintf.c
+++ b/stdio-common/test-vfprintf.c
@@ -1,7 +1,6 @@
 /* Tests of *printf for very large strings.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.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/stdio-common/tst-fphex-wide.c b/stdio-common/tst-fphex-wide.c
index c20ca7f..494c94c 100644
--- a/stdio-common/tst-fphex-wide.c
+++ b/stdio-common/tst-fphex-wide.c
@@ -1,7 +1,6 @@
 /* Test program for %a wprintf formats.
    This file is part of the GNU C Library.
    Copyright (C) 2012-2021 Free Software Foundation, Inc.
-   Contributed by Marek Polacek <polacek@redhat.com>, 2012.
 
    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/stdio-common/tst-fseek.c b/stdio-common/tst-fseek.c
index 617a3ba..106556f 100644
--- a/stdio-common/tst-fseek.c
+++ b/stdio-common/tst-fseek.c
@@ -1,7 +1,6 @@
 /* Tests of fseek and fseeko.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.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/stdio-common/tst-gets.c b/stdio-common/tst-gets.c
index 95cbd70..c1ccd84 100644
--- a/stdio-common/tst-gets.c
+++ b/stdio-common/tst-gets.c
@@ -1,7 +1,6 @@
 /* Tests for gets.
    Copyright (C) 2001-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@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/stdio-common/tst-long-dbl-fphex.c b/stdio-common/tst-long-dbl-fphex.c
index fee666a..82089bd 100644
--- a/stdio-common/tst-long-dbl-fphex.c
+++ b/stdio-common/tst-long-dbl-fphex.c
@@ -1,6 +1,5 @@
 /* This file is part of the GNU C Library.
    Copyright (C) 2012-2021 Free Software Foundation, Inc.
-   Contributed by Marek Polacek <polacek@redhat.com>, 2012.
 
    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/stdio-common/tst-perror.c b/stdio-common/tst-perror.c
index 416b120..57835e0 100644
--- a/stdio-common/tst-perror.c
+++ b/stdio-common/tst-perror.c
@@ -1,5 +1,4 @@
 /* Test of perror.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
    To be used only for testing glibc.  */
 
 #include <errno.h>
diff --git a/stdio-common/tst-popen.c b/stdio-common/tst-popen.c
index 82611d8..473c7e5 100644
--- a/stdio-common/tst-popen.c
+++ b/stdio-common/tst-popen.c
@@ -1,6 +1,5 @@
 /* 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/stdio-common/tst-sscanf.c b/stdio-common/tst-sscanf.c
index 47bfc89..b080b0d 100644
--- a/stdio-common/tst-sscanf.c
+++ b/stdio-common/tst-sscanf.c
@@ -1,6 +1,5 @@
 /* Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.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/stdio-common/tst-unlockedio.c b/stdio-common/tst-unlockedio.c
index a4c44ec..884243f 100644
--- a/stdio-common/tst-unlockedio.c
+++ b/stdio-common/tst-unlockedio.c
@@ -1,7 +1,6 @@
 /* Test for some *_unlocked stdio interfaces.
    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