Use more specific D-Bus errors

Submitted by David Zeuthen

Assigned to David Zeuthen

Link to original bug (#644397)

Description

See https://bugs.freedesktop.org/show_bug.cgi?id=34527 for four new D-Bus errors: UnknownInterface, UnknownObject, UnknownProperty and PropertyReadOnly. GDBus should return these errors as appropriate instead of just UnknownMethod.