Add CPU count and CFS restrictions info to numba -s.
Add CPU count and CFS restrictions info to numba -s.

As title.

Fixes #3253

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