Add allocation hoisting info to LICM section at diagnostic L4
Add allocation hoisting info to LICM section at diagnostic L4

This makes it so that allocation hoisting is spelled out at L4
and L3 of parfors diagnostics. It's easier interpreting the
instruction hoisting section in L4 if the allocation hoists are
noted a priori.

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