[d-feet] Use correct license which is GPL-2.0

[Thomas Bechtold <toabctl src gnome org>]

commit 54a7a7358b5c7c3636922c01622c511fab02cbb4
Author: Thomas Bechtold <tbechtold suse com>
Date:   Sun Jun 21 18:11:20 2015 +0200

    Use correct license which is GPL-2.0
    
    Partly solves https://bugzilla.gnome.org/show_bug.cgi?id=750214

 src/d-feet.in       |   13 +++++++------
 src/dfeet/window.py |   15 ++++++++-------
 2 files changed, 15 insertions(+), 13 deletions(-)
---
diff --git a/src/d-feet.in b/src/d-feet.in
index 00e3816..d5e7d5b 100644
--- a/src/d-feet.in
+++ b/src/d-feet.in
@@ -5,18 +5,19 @@
 
 # This file is part of d-feet.
 
-# D-Feet 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 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
+# of the License, or (at your option) any later version.
 
-# D-Feet is distributed in the hope that it will be useful,
+# 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 D-Feet.  If not, see <http://www.gnu.org/licenses/>.
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 
 #import os
diff --git a/src/dfeet/window.py b/src/dfeet/window.py
index b03b447..5bfd9af 100644
--- a/src/dfeet/window.py
+++ b/src/dfeet/window.py
@@ -1,20 +1,21 @@
 # -*- coding: utf-8 -*-
-# Copyright (C) 2013 Thomas Bechtold <thomasbechtold jpberlin de>
+# copyright (C) 2013 Thomas Bechtold <thomasbechtold jpberlin de>
 
 # This file is part of D-Feet.
 
-# D-Feet 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 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
+# of the License, or (at your option) any later version.
 
-# D-Feet is distributed in the hope that it will be useful,
+# 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 D-Feet.  If not, see <http://www.gnu.org/licenses/>.
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 from gi.repository import GObject, Gtk, Gio