Fix Python 2.7 exec problem.
Fix Python 2.7 exec problem.

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