Comment 4 for bug 1325799

So I've been trying to figure out the least invasive way to do this to allow us to backport the fix. The problem is we've got some ugliness going on in the inheritance model, particularly the ordering of setting up the target-helper and the base class of the driver. The problem is that simply trying to just grab "self.configuration" settings from the individual backend proves to cause a number of things to break.

I've got a pretty significant refactor of the code that will fix this, but I think it's too heavy for a backport so I'm holding off on doing anything more with it until I see if I can come up with a hack that can be backported.