automatic runner inference

[Antony Mayi]

Currently I need to compile my pipeline with options.setRunner(XY.class). is it 
not possible to infer the runner implicitly? ie. ultimately having one jar file 
that I can submit to any platform and it would run (currently I need to 
recompile or specify some switches before running it on different engine). Some 
kind of platform detection with potential fallback to direct runner.
thanks,antony.