Add function code and closure bytes into cache key
Add function code and closure bytes into cache key

As title.

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