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>

13 files changed, 0 insertions, 13 deletions

diff --git a/sysdeps/m68k/fpu/fclrexcpt.c b/sysdeps/m68k/fpu/fclrexcpt.c
index 7817370996..8c004efa0e 100644
--- a/sysdeps/m68k/fpu/fclrexcpt.c
+++ b/sysdeps/m68k/fpu/fclrexcpt.c
@@ -1,7 +1,6 @@
 /* Clear given exceptions in current floating-point environment.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.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/m68k/fpu/fedisblxcpt.c b/sysdeps/m68k/fpu/fedisblxcpt.c
index 6328c2bb40..8af4c1e8a0 100644
--- a/sysdeps/m68k/fpu/fedisblxcpt.c
+++ b/sysdeps/m68k/fpu/fedisblxcpt.c
@@ -1,7 +1,6 @@
 /* Disable floating-point exceptions.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@suse.de>, 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/sysdeps/m68k/fpu/feenablxcpt.c b/sysdeps/m68k/fpu/feenablxcpt.c
index e17b398882..c428f353cc 100644
--- a/sysdeps/m68k/fpu/feenablxcpt.c
+++ b/sysdeps/m68k/fpu/feenablxcpt.c
@@ -1,7 +1,6 @@
 /* Enable floating-point exceptions.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@suse.de>, 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/sysdeps/m68k/fpu/fegetenv.c b/sysdeps/m68k/fpu/fegetenv.c
index ff33ea8ee7..7b0c27bdf8 100644
--- a/sysdeps/m68k/fpu/fegetenv.c
+++ b/sysdeps/m68k/fpu/fegetenv.c
@@ -1,7 +1,6 @@
 /* Store current floating-point environment.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.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/m68k/fpu/fegetexcept.c b/sysdeps/m68k/fpu/fegetexcept.c
index b394f1a19d..91e4ad2114 100644
--- a/sysdeps/m68k/fpu/fegetexcept.c
+++ b/sysdeps/m68k/fpu/fegetexcept.c
@@ -1,7 +1,6 @@
 /* Get enabled floating-point exceptions.
    Copyright (C) 2000-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@suse.de>, 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/sysdeps/m68k/fpu/fegetround.c b/sysdeps/m68k/fpu/fegetround.c
index 587f77cb4a..ee8d9366ae 100644
--- a/sysdeps/m68k/fpu/fegetround.c
+++ b/sysdeps/m68k/fpu/fegetround.c
@@ -1,7 +1,6 @@
 /* Return current rounding direction.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.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/m68k/fpu/feholdexcpt.c b/sysdeps/m68k/fpu/feholdexcpt.c
index 5cda1d52fb..c6cb6dd244 100644
--- a/sysdeps/m68k/fpu/feholdexcpt.c
+++ b/sysdeps/m68k/fpu/feholdexcpt.c
@@ -1,7 +1,6 @@
 /* Store current floating-point environment and clear exceptions.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.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/m68k/fpu/fesetenv.c b/sysdeps/m68k/fpu/fesetenv.c
index b68cd307c7..6d47fa771f 100644
--- a/sysdeps/m68k/fpu/fesetenv.c
+++ b/sysdeps/m68k/fpu/fesetenv.c
@@ -1,7 +1,6 @@
 /* Install given floating-point environment.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.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/m68k/fpu/fesetround.c b/sysdeps/m68k/fpu/fesetround.c
index 2a7e295d1f..efea25d0ba 100644
--- a/sysdeps/m68k/fpu/fesetround.c
+++ b/sysdeps/m68k/fpu/fesetround.c
@@ -1,7 +1,6 @@
 /* Set current rounding direction.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.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/m68k/fpu/feupdateenv.c b/sysdeps/m68k/fpu/feupdateenv.c
index 1b0edc1ac1..ff01add477 100644
--- a/sysdeps/m68k/fpu/feupdateenv.c
+++ b/sysdeps/m68k/fpu/feupdateenv.c
@@ -1,7 +1,6 @@
 /* Install given floating-point environment and raise exceptions.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.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/m68k/fpu/fgetexcptflg.c b/sysdeps/m68k/fpu/fgetexcptflg.c
index 86332baf71..559c8cf9a0 100644
--- a/sysdeps/m68k/fpu/fgetexcptflg.c
+++ b/sysdeps/m68k/fpu/fgetexcptflg.c
@@ -1,7 +1,6 @@
 /* Store current representation for exceptions.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.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/m68k/fpu/fsetexcptflg.c b/sysdeps/m68k/fpu/fsetexcptflg.c
index 6a061360ca..fcbd02e2c0 100644
--- a/sysdeps/m68k/fpu/fsetexcptflg.c
+++ b/sysdeps/m68k/fpu/fsetexcptflg.c
@@ -1,7 +1,6 @@
 /* Set floating-point environment exception handling.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.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/m68k/fpu/ftestexcept.c b/sysdeps/m68k/fpu/ftestexcept.c
index 70775563c8..b6dbdb5169 100644
--- a/sysdeps/m68k/fpu/ftestexcept.c
+++ b/sysdeps/m68k/fpu/ftestexcept.c
@@ -1,7 +1,6 @@
 /* Test exception in current environment.
    Copyright (C) 1997-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.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