add test for recursive stencil const inference
add test for recursive stencil const inference

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