Backport dbus-launch test runner wrapper from master
Backport dbus-launch test runner wrapper from master

Tragetaschen/dbus-sharp,openmedicus/dbus-sharp,openmedicus/dbus-sharp,mono/dbus-sharp,mono/dbus-sharp,arfbtwn/dbus-sharp,arfbtwn/dbus-sharp,Tragetaschen/dbus-sharp