Log Message:
Update lang/nodejs to 9.3.0.

async_hooks:
- add trace events to async_hooks
- add provider types for net server

console:
- console.debug can now be used outside of the inspector

deps:
- upgrade libuv to 1.18.0
- patch V8 to 6.2.414.46

module:
- module.builtinModules will return a list of built in modules

n-api:
- add helper for addons to get the event loop

process:
- process.setUncaughtExceptionCaptureCallback can now be used to
  customize behavior for --abort-on-uncaught-exception
- A signal handler is now able to receive the signal code that
  triggered the handler.

src:
- embedders can now use Node::CreatePlatform to create an instance of
  NodePlatform

stream:
- writable.writableHighWaterMark and readable.readableHighWaterMark
  will return the values the stream object was instantiated with