minor stencilparfor.py cleanup
minor stencilparfor.py cleanup

numba/numba,gmarkall/numba,cpcloud/numba,jriehl/numba,stuartarchibald/numba,stonebig/numba,gmarkall/numba,numba/numba,stonebig/numba,sklam/numba,stonebig/numba,sklam/numba,seibert/numba,cpcloud/numba,sklam/numba,gmarkall/numba,gmarkall/numba,cpcloud/numba,stuartarchibald/numba,stonebig/numba,IntelLabs/numba,seibert/numba,stuartarchibald/numba,numba/numba,numba/numba,jriehl/numba,seibert/numba,IntelLabs/numba,jriehl/numba,jriehl/numba,sklam/numba,seibert/numba,IntelLabs/numba,gmarkall/numba,seibert/numba,jriehl/numba,stuartarchibald/numba,sklam/numba,numba/numba,cpcloud/numba,stonebig/numba,IntelLabs/numba,IntelLabs/numba,cpcloud/numba,stuartarchibald/numba