libnm/libnm-glib: add NMClient.get_all_devices() method and AllDevices property

Mirror new NetworkManager API to return both real devices and
device placeholders.

examples/python/gi/get-devices.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+# vim: ft=python ts=4 sts=4 sw=4 et ai
+# -*- Mode: python; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+#
+# 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.
+#
+# 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, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Copyright (C) 2014 Red Hat, Inc.
+#
+
+# This example lists all devices, both real and placeholder ones
+
+from gi.repository import GLib, NM
+
+if __name__ == "__main__":
+    client = NM.Client.new(None)
+    devices = client.get_all_devices()
+
+    print "Real devices"
+    print "------------"
+    for d in devices:
+        if d.is_real():
+            print "%s (%s): %s" % (d.get_iface(), d.get_type_description(), d.get_state())
+
+    print "\nUnrealized/placeholder devices"
+    print "------------------------------"
+    for d in devices:
+        if not d.is_real():
+            print "%s (%s): %s" % (d.get_iface(), d.get_type_description(), d.get_state())
+