Adapt Travis config for Trusty beta
Adapt Travis config for Trusty beta

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