dbus: Set GObject event loop as default DBus loop

This must be done early in the process life cycle to have any effect. In the
MPRIS frontend code is too late. Right before the GObject loop is created in
RootCommand.run() is also too late.

Fixes mopidy/mopidy-mpris#2

mopidy/__main__.py

@@ -8,6 +8,10 @@ import sys
 import gobject
 gobject.threads_init()
 
+import dbus.mainloop.glib
+dbus.mainloop.glib.threads_init()
+dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
+
 import pykka.debug
 
 

mopidy/commands.py

@@ -2,11 +2,12 @@ from __future__ import unicode_literals
 
 import argparse
 import collections
-import gobject
 import logging
 import os
 import sys
 
+import gobject
+
 from mopidy import config as config_lib
 from mopidy.audio import Audio
 from mopidy.core import Core