Cope with asynchronous ChildProcess.prototype.send in Node v4.
Cope with asynchronous ChildProcess.prototype.send in Node v4.

https://github.com/nodejs/node/pull/2620

Part of #6921.

chasertech/meteor,Hansoft/meteor,chasertech/meteor,Hansoft/meteor,mjmasn/meteor,chasertech/meteor,chasertech/meteor,mjmasn/meteor,chasertech/meteor,mjmasn/meteor,mjmasn/meteor,chasertech/meteor,Hansoft/meteor,mjmasn/meteor,Hansoft/meteor,mjmasn/meteor,mjmasn/meteor,Hansoft/meteor,Hansoft/meteor,chasertech/meteor,Hansoft/meteor