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 20d71a7e87..eca0b82d26 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 c37d1c359d..7e5b749d17 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 35ad6943ea..c5727191c0 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 6e01c81ce3..f1dc4d5dba 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 317d4969d3..69a5b0ba4c 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 06daeb626b..ce32603208 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 70e5993e23..75bbadbaeb 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 74fc354800..c3cab6c157 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 13a65acd28..056f276dbb 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 7701a98ca6..bf45e4c827 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 1d77185af7..7c67cfe812 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 c20ca7fa06..494c94c622 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 617a3baf96..106556fc2c 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 95cbd70ceb..c1ccd84827 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 fee666a551..82089bdd7c 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 416b120b8d..57835e0c59 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 82611d8751..473c7e5597 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 47bfc89feb..b080b0d837 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 a4c44ec844..884243fb87 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