wf_required_fields should let its settings be exported, using the ctools api.

However, sadly, despite the venerability of the workflow module, it does not have exportables. Work is being done -- see #558378: Make workflows exportable with Features (D6). But that means that we can't export, because we would have to export the workflow state's database ids, which will have no meaning when imported into a new context.

So, I'd like to keep this on our radar, and note that it's something to be worked on, but that we're blocking on workflows.