tools: Mark GPL-only files with SPDX license identifier

These files are licensed under the GPL only, without the AFL dual-license
of most of the dbus codebase.

Signed-off-by: Simon McVittie <smcv@collabora.com>
Co-authored-by: Ralf Habacker <ralf.habacker@freenet.de>

doc/dbus-test-tool.1.xml.in

@@ -7,6 +7,9 @@
       <holder>Collabora Ltd.</holder>
     </copyright>
     <legalnotice>
+      <!--
+        SPDX-License-Identifier: GPL-2.0-or-later
+      -->
       <para>This man page is distributed under the same terms as
         dbus-test-tool (GPL-2+). There is NO WARRANTY, to the extent
         permitted by law.</para>

tools/dbus-cleanup-sockets.c

@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2003 Red Hat, Inc.
  * Copyright (C) 2002 Michael Meeks
+ * SPDX-License-Identifier: GPL-2.0-or-later
  *
  * Note that this file is NOT licensed under the Academic Free License,
  * as it is based on linc-cleanup-sockets which is LGPL.

tools/dbus-echo.c

@@ -4,6 +4,7 @@
  * Copyright © 2003 Philip Blundell <philb@gnu.org>
  * Copyright © 2011 Nokia Corporation
  * Copyright © 2014 Collabora Ltd.
+ * 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

tools/dbus-monitor.c

@@ -2,6 +2,7 @@
 /* dbus-monitor.c  Utility program to monitor messages on the bus
  *
  * Copyright (C) 2003 Philip Blundell <philb@gnu.org>
+ * 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

tools/dbus-print-message.c

@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2003 Philip Blundell <philb@gnu.org>
  * Copyright (C) 2003 Red Hat, Inc.
+ * 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

tools/dbus-print-message.h

@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2003 Philip Blundell <philb@gnu.org>
  * Copyright (C) 2003 Red Hat, Inc.
+ * 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

tools/dbus-send.c

@@ -2,6 +2,7 @@
 /* dbus-send.c  Utility program to send messages from the command line
  *
  * Copyright (C) 2003 Philip Blundell <philb@gnu.org>
+ * 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

tools/dbus-spam.c

@@ -4,6 +4,7 @@
  * Copyright © 2003 Philip Blundell <philb@gnu.org>
  * Copyright © 2011 Nokia Corporation
  * Copyright © 2014 Collabora Ltd.
+ * 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

tools/dbus-uuidgen.c

@@ -2,6 +2,7 @@
 /* dbus-uuidgen.c  Utility program to create UUIDs
  *
  * Copyright (C) 2006 Red Hat, Inc.
+ * 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

tools/test-tool.c

@@ -4,6 +4,7 @@
  * Copyright © 2003 Philip Blundell <philb@gnu.org>
  * Copyright © 2011 Nokia Corporation
  * Copyright © 2014 Collabora Ltd.
+ * 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

tools/test-tool.h

@@ -4,6 +4,7 @@
  * Copyright © 2003 Philip Blundell <philb@gnu.org>
  * Copyright © 2011 Nokia Corporation
  * Copyright © 2014 Collabora Ltd.
+ * 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

tools/tool-common.c

@@ -4,6 +4,7 @@
  * Copyright © 2003 Philip Blundell <philb@gnu.org>
  * Copyright © 2011 Nokia Corporation
  * Copyright © 2014 Collabora Ltd.
+ * 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

tools/tool-common.h

@@ -4,6 +4,7 @@
  * Copyright © 2003 Philip Blundell <philb@gnu.org>
  * Copyright © 2011 Nokia Corporation
  * Copyright © 2014 Collabora Ltd.
+ * 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