Respond to PR #6020 feedback
Respond to PR #6020 feedback

- Unify templates for CUDA atomic max and min
- Update comments and variable names in the template to reflect current
  behaviour.

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