data: Fix license blurb and add SPDX-License-Identifier

The license blurb mentioned version 2 of the Lesser GPL, which doesn’t
exist — there’s version 2.0 of the _Library_ GPL, or version 2.1 of the
_Lesser_ GPL, but no 2.0 Lesser GPL.

Given that the COPYING file correctly mentions the LGPL 2.1, and the
vast majority of software projects and contributors use version 2.1 in
preference to version 2.0, I think this is a typo which has been
copypastaed across the project.

So, change ‘version 2’ to ‘version 2.1’ in the license blurbs for the
portal API definitions. It’s particularly important that these are
right, because they may well be copied to other projects so that D-Bus
bindings can be generated from them.

In addition, add an `SPDX-License-Identifier` to the portal API
definitions so the license is machine readable.

Signed-off-by: Philip Withnall <[email protected]>

data/org.freedesktop.background.Monitor.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2022 Endless OS Foundation, LLC
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.Access.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2016 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.Account.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2016 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.AppChooser.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2016 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.Background.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2019 Red Hat, Inc
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.Clipboard.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright 2022 Google LLC
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.DynamicLauncher.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2022 Matthew Leeds
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.Email.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2017 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.FileChooser.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2015 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.GlobalShortcuts.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2022 Aleix Pol Gonzalez <[email protected]>
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.Inhibit.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2016 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.InputCapture.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2022 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.Lockdown.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2018 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.Notification.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2016 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.PermissionStore.xml

@@ -5,10 +5,12 @@
 <!--
  Copyright (C) 2015 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.Print.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2016 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.RemoteDesktop.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2017-2018 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.Request.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2016 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.ScreenCast.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2017 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.Screenshot.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2016 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.Secret.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2019 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.Session.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2017 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.Settings.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2018 Igalia S.L.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.impl.portal.Wallpaper.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2019 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.portal.Account.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2016 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.portal.Background.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2019 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.portal.Camera.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright (C) 2018 Red Hat, Inc.
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of

data/org.freedesktop.portal.Clipboard.xml

@@ -2,10 +2,12 @@
 <!--
  Copyright 2022 Google LLC
 
+ SPDX-License-Identifier: LGPL-2.1-or-later
+
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
+ version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of