complete switch over to new DataflowRule design. Dataflow rules use

URL's to specify analysis objects from mysql databases distributed
across a network.  AnalysisJobAdaptor was switched to create jobs with
a cless method that gets the db connection from the analysis object that
is passed.  Thus the system now exists in a distributed state.
The dataflow rule also implements branching via the branch_code.
SimpleRule will be deprecated.