Refine deprecation API.
Refine deprecation API.

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