Remove rsem_reduce (superfluous function).  Added output arguments for rsem_postprocess (new terminal node).
Remove rsem_reduce (superfluous function).  Added output arguments for rsem_postprocess (new terminal node).

BD2KGenomics/toil-scripts,fnothaft/toil-scripts,fnothaft/toil-scripts,BD2KGenomics/toil-scripts,jpfeil/toil-scripts,jpfeil/toil-scripts