[PATCH 1/2] [gdb/contrib] Add missing copyright notices

[Tom de Vries <tdevries@suse.de>]

I found a few files in gdb/contrib that were missing a copyright notice.

In setup.cfg, it was trivial to add.

In codespell-ignore-words.txt, it was also trivial to add, but I found a
codespell issue stating that it's not explicitly support, so I added a note
about that.

In codespell-dictionary.txt, I had to resort to a hack, using an "empty word"
rewrite rule:
...
-># Comment here.
...

Also, I found that empty lines are not allowed in codespell-dictionary.txt.  I
filed an issue about these two problems [1].

Since these three files were added in 2025, I've used 2025-2026 as copyright
years.

Tested by running "pre-commit run --all-files".

[1] https://github.com/codespell-project/codespell/issues/3901
---
 gdb/contrib/codespell-dictionary.txt   | 23 +++++++++++++++++++++++
 gdb/contrib/codespell-ignore-words.txt | 21 +++++++++++++++++++++
 gdb/contrib/setup.cfg                  | 14 ++++++++++++++
 3 files changed, 58 insertions(+)

diff --git a/gdb/contrib/codespell-dictionary.txt b/gdb/contrib/codespell-dictionary.txt
index 70914421cbf..b02e6eb1997 100644
--- a/gdb/contrib/codespell-dictionary.txt
+++ b/gdb/contrib/codespell-dictionary.txt
@@ -1,3 +1,26 @@
+-># Copyright (C) 2025-2026 Free Software Foundation, Inc.
+-># This program is free software; you can redistribute it and/or modify
+-># it under the terms of the GNU General Public License as published by
+-># the Free Software Foundation; either version 3 of the License, or
+-># (at your option) any later version.
+->#
+-># This program is distributed in the hope that it will be useful,
+-># but WITHOUT ANY WARRANTY; without even the implied warranty of
+-># MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-># GNU General Public License for more details.
+->#
+-># You should have received a copy of the GNU General Public License
+-># along with this program.  If not, see <http://www.gnu.org/licenses/>.
+->#
+-># Hack: comments are not supported in this file, so instead use a rule
+-># rewriting an empty word.  This hack may stop working after a codespell
+-># update.
+->#
+-># Note: empty lines are not supported either.
+->#
+-># I've filed an issue about these two problems [1].
+->#
+-># [1] https://github.com/codespell-project/codespell/issues/3901
 gdbsever->gdbserver
 tcllint->tclint
 recordered->recorded
diff --git a/gdb/contrib/codespell-ignore-words.txt b/gdb/contrib/codespell-ignore-words.txt
index c07df0c001d..e9c1c2dc2f4 100644
--- a/gdb/contrib/codespell-ignore-words.txt
+++ b/gdb/contrib/codespell-ignore-words.txt
@@ -1,3 +1,24 @@
+# Copyright (C) 2025-2026 Free Software Foundation, Inc.
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# Note: comments are not explicitly supported in this file [1], but using them
+# doesn't seem to cause problems.
+#
+# Note: empty lines do seem to work here (unlike in codespell-dictionary.txt).
+#
+# [1] https://github.com/codespell-project/codespell/issues/2063
+
 configury
 SME
 Synopsys
diff --git a/gdb/contrib/setup.cfg b/gdb/contrib/setup.cfg
index 4793a6264af..3aa8ac058ab 100644
--- a/gdb/contrib/setup.cfg
+++ b/gdb/contrib/setup.cfg
@@ -1,3 +1,17 @@
+# Copyright (C) 2025-2026 Free Software Foundation, Inc.
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 [codespell]
 
 # Skip ChangeLogs and generated files.
-- 
2.51.0