2016-01-12, Version 5.4.1 (Stable)

Notable Changes:

* Minor performance improvements:
  - module: move unnecessary work for early return (Andres Suarez) https://github.com/nodejs/node/pull/3579
* Various bug fixes
* Various doc fixes
* Various test improvements

PR-URL: https://github.com/nodejs/node/pull/4626


Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>