use dbus remoting/name patch

The dbus_name.patch is required for dbus remoting things to work in flatpak (where dbus "namespaces" need to be explicitly allowed/owned) – firefox' code messes things up there (not using proper names derived from the appname etc.) otherwise.

Should fix flatpak#50 (closed) and might even be the cause of flatpak#49 (closed), but I'm not sure about the latter.

Using this patch didn't break anything for the Arch builds in the past, too, so it should be fine for the other Linux packages as well?