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>

38 files changed, 0 insertions, 38 deletions

diff --git a/nptl_db/td_init.c b/nptl_db/td_init.c
index 06b5adc..d016809 100644
--- a/nptl_db/td_init.c
+++ b/nptl_db/td_init.c
@@ -1,7 +1,6 @@
 /* Initialization function of thread debugger support library.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_log.c b/nptl_db/td_log.c
index 9c16499..a75906d 100644
--- a/nptl_db/td_log.c
+++ b/nptl_db/td_log.c
@@ -1,7 +1,6 @@
 /* Noop, left for historical reasons.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_symbol_list.c b/nptl_db/td_symbol_list.c
index 6f2d5fa..ba3d9d9 100644
--- a/nptl_db/td_symbol_list.c
+++ b/nptl_db/td_symbol_list.c
@@ -1,7 +1,6 @@
 /* Return list of symbols the library can request.
    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/nptl_db/td_ta_clear_event.c b/nptl_db/td_ta_clear_event.c
index a618ef9..176d3cb 100644
--- a/nptl_db/td_ta_clear_event.c
+++ b/nptl_db/td_ta_clear_event.c
@@ -1,7 +1,6 @@
 /* Globally disable events.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_ta_delete.c b/nptl_db/td_ta_delete.c
index b68eaf4..a547d99 100644
--- a/nptl_db/td_ta_delete.c
+++ b/nptl_db/td_ta_delete.c
@@ -1,7 +1,6 @@
 /* Detach to target process.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_ta_enable_stats.c b/nptl_db/td_ta_enable_stats.c
index 8a8ccb9..3bcd6e0 100644
--- a/nptl_db/td_ta_enable_stats.c
+++ b/nptl_db/td_ta_enable_stats.c
@@ -1,7 +1,6 @@
 /* Enable collection of statistics for process.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_ta_event_addr.c b/nptl_db/td_ta_event_addr.c
index d636468..ac6f339 100644
--- a/nptl_db/td_ta_event_addr.c
+++ b/nptl_db/td_ta_event_addr.c
@@ -1,7 +1,6 @@
 /* Get event address.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_ta_event_getmsg.c b/nptl_db/td_ta_event_getmsg.c
index 0fa1389..019f787 100644
--- a/nptl_db/td_ta_event_getmsg.c
+++ b/nptl_db/td_ta_event_getmsg.c
@@ -1,7 +1,6 @@
 /* Retrieve event.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_ta_get_nthreads.c b/nptl_db/td_ta_get_nthreads.c
index 2684b84..5c43aba 100644
--- a/nptl_db/td_ta_get_nthreads.c
+++ b/nptl_db/td_ta_get_nthreads.c
@@ -1,7 +1,6 @@
 /* Get the number of threads in the process.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_ta_get_ph.c b/nptl_db/td_ta_get_ph.c
index 8ed841f..4644f2f 100644
--- a/nptl_db/td_ta_get_ph.c
+++ b/nptl_db/td_ta_get_ph.c
@@ -1,7 +1,6 @@
 /* Get external process handle.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_ta_get_stats.c b/nptl_db/td_ta_get_stats.c
index e4b0df8..730e1a3 100644
--- a/nptl_db/td_ta_get_stats.c
+++ b/nptl_db/td_ta_get_stats.c
@@ -1,7 +1,6 @@
 /* Retrieve statistics for process.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_ta_map_id2thr.c b/nptl_db/td_ta_map_id2thr.c
index 142b7e6..e559757 100644
--- a/nptl_db/td_ta_map_id2thr.c
+++ b/nptl_db/td_ta_map_id2thr.c
@@ -1,7 +1,6 @@
 /* Map thread ID to thread handle.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_ta_new.c b/nptl_db/td_ta_new.c
index eeca29d..efcc85b 100644
--- a/nptl_db/td_ta_new.c
+++ b/nptl_db/td_ta_new.c
@@ -1,7 +1,6 @@
 /* Attach to target process.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_ta_reset_stats.c b/nptl_db/td_ta_reset_stats.c
index c673c66..b4b3a9d 100644
--- a/nptl_db/td_ta_reset_stats.c
+++ b/nptl_db/td_ta_reset_stats.c
@@ -1,7 +1,6 @@
 /* Reset statistics.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_ta_set_event.c b/nptl_db/td_ta_set_event.c
index 94b3ae9..c49790d 100644
--- a/nptl_db/td_ta_set_event.c
+++ b/nptl_db/td_ta_set_event.c
@@ -1,7 +1,6 @@
 /* Globally enable events.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_ta_setconcurrency.c b/nptl_db/td_ta_setconcurrency.c
index a2c7fb5..3f2c192 100644
--- a/nptl_db/td_ta_setconcurrency.c
+++ b/nptl_db/td_ta_setconcurrency.c
@@ -1,7 +1,6 @@
 /* Set suggested concurrency level for process.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_ta_thr_iter.c b/nptl_db/td_ta_thr_iter.c
index 9828618..c75309d 100644
--- a/nptl_db/td_ta_thr_iter.c
+++ b/nptl_db/td_ta_thr_iter.c
@@ -1,7 +1,6 @@
 /* Iterate over a process's threads.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_ta_tsd_iter.c b/nptl_db/td_ta_tsd_iter.c
index 023ba49..40d9cbd 100644
--- a/nptl_db/td_ta_tsd_iter.c
+++ b/nptl_db/td_ta_tsd_iter.c
@@ -1,7 +1,6 @@
 /* Iterate over a process's thread-specific data.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_clear_event.c b/nptl_db/td_thr_clear_event.c
index f13e137..660e4f5 100644
--- a/nptl_db/td_thr_clear_event.c
+++ b/nptl_db/td_thr_clear_event.c
@@ -1,7 +1,6 @@
 /* Disable specific event for thread.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_dbresume.c b/nptl_db/td_thr_dbresume.c
index 8a82628..b76bdef 100644
--- a/nptl_db/td_thr_dbresume.c
+++ b/nptl_db/td_thr_dbresume.c
@@ -1,7 +1,6 @@
 /* Resume execution of given thread.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_dbsuspend.c b/nptl_db/td_thr_dbsuspend.c
index 21ce995..9dd94e7 100644
--- a/nptl_db/td_thr_dbsuspend.c
+++ b/nptl_db/td_thr_dbsuspend.c
@@ -1,7 +1,6 @@
 /* Suspend execution of given thread.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_event_enable.c b/nptl_db/td_thr_event_enable.c
index f53fdf0..c458e34 100644
--- a/nptl_db/td_thr_event_enable.c
+++ b/nptl_db/td_thr_event_enable.c
@@ -1,7 +1,6 @@
 /* Enable event process-wide.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_event_getmsg.c b/nptl_db/td_thr_event_getmsg.c
index 9c79417..982e246 100644
--- a/nptl_db/td_thr_event_getmsg.c
+++ b/nptl_db/td_thr_event_getmsg.c
@@ -1,7 +1,6 @@
 /* Retrieve event.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_get_info.c b/nptl_db/td_thr_get_info.c
index 01af021..7d79bd4 100644
--- a/nptl_db/td_thr_get_info.c
+++ b/nptl_db/td_thr_get_info.c
@@ -1,7 +1,6 @@
 /* Get thread information.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_getfpregs.c b/nptl_db/td_thr_getfpregs.c
index 3d08aa3..4dc4e39 100644
--- a/nptl_db/td_thr_getfpregs.c
+++ b/nptl_db/td_thr_getfpregs.c
@@ -1,7 +1,6 @@
 /* Get a thread's floating-point register set.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_getgregs.c b/nptl_db/td_thr_getgregs.c
index 8f9fab0..2dfa4fe 100644
--- a/nptl_db/td_thr_getgregs.c
+++ b/nptl_db/td_thr_getgregs.c
@@ -1,7 +1,6 @@
 /* Get a thread's general register set.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_getxregs.c b/nptl_db/td_thr_getxregs.c
index 4d64726..01f4d06 100644
--- a/nptl_db/td_thr_getxregs.c
+++ b/nptl_db/td_thr_getxregs.c
@@ -1,7 +1,6 @@
 /* Get a thread's extra state register set.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_getxregsize.c b/nptl_db/td_thr_getxregsize.c
index 42f1873..59cbc3e 100644
--- a/nptl_db/td_thr_getxregsize.c
+++ b/nptl_db/td_thr_getxregsize.c
@@ -1,7 +1,6 @@
 /* Get the size of the extra state register set for this architecture.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_set_event.c b/nptl_db/td_thr_set_event.c
index fe33e67..d2f60c2 100644
--- a/nptl_db/td_thr_set_event.c
+++ b/nptl_db/td_thr_set_event.c
@@ -1,7 +1,6 @@
 /* Enable specific event for thread.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_setfpregs.c b/nptl_db/td_thr_setfpregs.c
index bddb035..f4dfc8b 100644
--- a/nptl_db/td_thr_setfpregs.c
+++ b/nptl_db/td_thr_setfpregs.c
@@ -1,7 +1,6 @@
 /* Set a thread's floating-point register set.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_setgregs.c b/nptl_db/td_thr_setgregs.c
index 2a76a10..2e5c20f 100644
--- a/nptl_db/td_thr_setgregs.c
+++ b/nptl_db/td_thr_setgregs.c
@@ -1,7 +1,6 @@
 /* Set a thread's general register set.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_setprio.c b/nptl_db/td_thr_setprio.c
index 7ac00c2..7d6560f 100644
--- a/nptl_db/td_thr_setprio.c
+++ b/nptl_db/td_thr_setprio.c
@@ -1,7 +1,6 @@
 /* Set a thread's priority.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_setsigpending.c b/nptl_db/td_thr_setsigpending.c
index 2f0217f..d3475c3 100644
--- a/nptl_db/td_thr_setsigpending.c
+++ b/nptl_db/td_thr_setsigpending.c
@@ -1,7 +1,6 @@
 /* Raise a signal for a thread.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_setxregs.c b/nptl_db/td_thr_setxregs.c
index b8db1bc..752c4df 100644
--- a/nptl_db/td_thr_setxregs.c
+++ b/nptl_db/td_thr_setxregs.c
@@ -1,7 +1,6 @@
 /* Set a thread's extra state register set.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_sigsetmask.c b/nptl_db/td_thr_sigsetmask.c
index 437f525..98442c3 100644
--- a/nptl_db/td_thr_sigsetmask.c
+++ b/nptl_db/td_thr_sigsetmask.c
@@ -1,7 +1,6 @@
 /* Set a thread's signal mask.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_tls_get_addr.c b/nptl_db/td_thr_tls_get_addr.c
index 124b867..bf72414 100644
--- a/nptl_db/td_thr_tls_get_addr.c
+++ b/nptl_db/td_thr_tls_get_addr.c
@@ -1,7 +1,6 @@
 /* Get address of thread local variable.
    Copyright (C) 2002-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 2002.
 
    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/nptl_db/td_thr_tsd.c b/nptl_db/td_thr_tsd.c
index 4ef09dd..118e98b 100644
--- a/nptl_db/td_thr_tsd.c
+++ b/nptl_db/td_thr_tsd.c
@@ -1,7 +1,6 @@
 /* Get a thread-specific data pointer for a thread.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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/nptl_db/td_thr_validate.c b/nptl_db/td_thr_validate.c
index 06ba221..0f653b8 100644
--- a/nptl_db/td_thr_validate.c
+++ b/nptl_db/td_thr_validate.c
@@ -1,7 +1,6 @@
 /* Validate a thread handle.
    Copyright (C) 1999-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@redhat.com>, 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