2016-05-05, Version 4.4.4 'Argon' (LTS)

Notable changes

* deps:
  * update openssl to 1.0.2h. (Shigeki Ohtsu)
    [#6551](https://github.com/nodejs/node/pull/6551)
    - Please see our blog postfor more info on the security
      contents of this release.
      https://nodejs.org/en/blog/vulnerability/openssl-may-2016/

PR-URL: https://github.com/nodejs/node/pull/6583


Reviewed-By: James M Snell <jasnell@gmail.com>