Code review comment for lp:~marcustomlinson/unity-scopes-api/debug_dbus_messages

I just noticed that there is also a call to system() in SSRegistryObject. I don't think we ever have both RegistryObject and SSRegistryObject instantiated in the same process, so we can't race there. But this suggests that we probably should have a utility class that wraps calls to system so they are serialised.