Rewrite make-target-delegates in Python

I think gdb is probably better off having fewer languages involved
when generating code.  'sh' is unavoidable for build-time generation,
but for other things, let's use Python.

This rewrites make-target-delegates in Python.  I've stuck pretty
closely to the original code in this rewrite, so it may look slightly
weird from a Python perspective.

The only output difference is that a copyright header is now
generated, using the code introduced in the previous patch.

make-target-delegates.py is simpler to invoke, as it knows the correct
input file to scan and it creates the output file itself.

1 files changed, 23 insertions, 3 deletions

diff --git a/gdb/target-delegates.c b/gdb/target-delegates.c
index ca1734f..fd01b64 100644
--- a/gdb/target-delegates.c
+++ b/gdb/target-delegates.c
@@ -1,8 +1,28 @@
-/* THIS FILE IS GENERATED -*- buffer-read-only: t -*- */
+/* *INDENT-OFF* */ /* THIS FILE IS GENERATED -*- buffer-read-only: t -*- */
 /* vi:set ro: */
 
-/* To regenerate this file, run:*/
-/*      make-target-delegates target.h > target-delegates.c */
+/* Boilerplate target methods for GDB
+
+   Copyright (C) 2013-2022 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   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/>.  */
+
+/* To regenerate this file, run:
+   ./make-target-delegates.py
+*/
 
 struct dummy_target : public target_ops
 {