[glib: 2/4] tests: Add some SPDX license headers

[Sebastian Dröge <sdroege src gnome org>]

commit 2dc818459000465e200888ee2a8bf064e82a26c9
Author: Philip Withnall <pwithnall endlessos org>
Date:   Tue May 17 17:04:24 2022 +0100

    tests: Add some SPDX license headers
    
    These cover the files which Debian has already worked out the licensing
    information for, in
    https://salsa.debian.org/gnome-team/glib/-/blob/debian/master/debian/copyright.
    
    Signed-off-by: Philip Withnall <pwithnall endlessos org>
    
    Helps: #1415

 glib/tests/gen-casefold-txt.py | 2 ++
 glib/tests/gen-casemap-txt.py  | 2 ++
 gobject/tests/taptestrunner.py | 2 ++
 3 files changed, 6 insertions(+)
---
diff --git a/glib/tests/gen-casefold-txt.py b/glib/tests/gen-casefold-txt.py
index e7bafa0bab..21a7ca0ee9 100755
--- a/glib/tests/gen-casefold-txt.py
+++ b/glib/tests/gen-casefold-txt.py
@@ -2,6 +2,8 @@
 # Copyright (C) 1998, 1999 Tom Tromey
 # Copyright (C) 2001 Red Hat Software
 #
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
 # 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 2, or (at your option)
diff --git a/glib/tests/gen-casemap-txt.py b/glib/tests/gen-casemap-txt.py
index 62d59638a7..6bf5ddbbf1 100755
--- a/glib/tests/gen-casemap-txt.py
+++ b/glib/tests/gen-casemap-txt.py
@@ -2,6 +2,8 @@
 # Copyright (C) 1998, 1999 Tom Tromey
 # Copyright (C) 2001 Red Hat Software
 #
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
 # 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 2, or (at your option)
diff --git a/gobject/tests/taptestrunner.py b/gobject/tests/taptestrunner.py
index 9ce3b43a4a..9adbd8daa4 100644
--- a/gobject/tests/taptestrunner.py
+++ b/gobject/tests/taptestrunner.py
@@ -4,6 +4,8 @@
 # Copyright (c) 2015 Remko Tronçon (https://el-tramo.be)
 # Copied from https://github.com/remko/pycotap/
 #
+# SPDX-License-Identifier: MIT
+#
 # Released under the MIT license
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy