Better error messages for ambiguous overloads
Better error messages for ambiguous overloads

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