Fix reference to sys.ji on OSX/Linux
Fix reference to sys.ji on OSX/Linux

slowbrain/node-julia,slowbrain/node-julia,Alfheim/node-julia,waTeim/node-julia,waTeim/node-julia,waTeim/node-julia,waTeim/node-julia,Alfheim/node-julia,Alfheim/node-julia,Alfheim/node-julia,slowbrain/node-julia,slowbrain/node-julia