There is an annotation for setting the client symbol names for dbus-binding-tool.
Created attachment 1760 Define org.freedesktop.DBus.GLib.ClientCSymbol Duno if you used sed on purpose, but there is a way to set the client names. The prefix command line option only affects glib-server, so therefore I've removed it.
Ah, useful. Didn't know that. Feel free to commit.
Committed in revision 27443.