node-modules/cfork — pull request #5 by coderhaoxin (2014-11-06 03:59:28+00:00)
Title: add default args value

https://github.com/joyent/node/blob/v0.12/lib/cluster.js#L249

if options.args is undefined, the pre version will pass `undefined` to replace `process.argv.slice(2)` in `cluster`