Test llvm-config before installing llvmpy on travis
Test llvm-config before installing llvmpy on travis

jriehl/numba,pitrou/numba,jriehl/numba,stonebig/numba,numba/numba,stefanseefeld/numba,shiquanwang/numba,stuartarchibald/numba,gdementen/numba,numba/numba,stonebig/numba,gmarkall/numba,ssarangi/numba,jriehl/numba,sklam/numba,stefanseefeld/numba,cpcloud/numba,seibert/numba,gdementen/numba,numba/numba,pombredanne/numba,gmarkall/numba,stonebig/numba,pombredanne/numba,gdementen/numba,gdementen/numba,seibert/numba,gmarkall/numba,IntelLabs/numba,cpcloud/numba,pitrou/numba,GaZ3ll3/numba,shiquanwang/numba,stefanseefeld/numba,seibert/numba,numba/numba,GaZ3ll3/numba,pombredanne/numba,gdementen/numba,pitrou/numba,stefanseefeld/numba,cpcloud/numba,stuartarchibald/numba,sklam/numba,ssarangi/numba,jriehl/numba,ssarangi/numba,GaZ3ll3/numba,IntelLabs/numba,sklam/numba,stonebig/numba,seibert/numba,cpcloud/numba,GaZ3ll3/numba,jriehl/numba,pitrou/numba,ssarangi/numba,IntelLabs/numba,stuartarchibald/numba,stefanseefeld/numba,cpcloud/numba,sklam/numba,sklam/numba,stuartarchibald/numba,gmarkall/numba,pitrou/numba,pombredanne/numba,pombredanne/numba,GaZ3ll3/numba,shiquanwang/numba,stonebig/numba,IntelLabs/numba,IntelLabs/numba,gmarkall/numba,stuartarchibald/numba,numba/numba,ssarangi/numba,seibert/numba