build: add MSVS 2015 support

This is a port of 4208dc4f .

Original commit message:

  PR-URL: https://github.com/nodejs/node/pull/2036


Reviewed-By: Alexis Campailla <alexis@janeasystems.com>

This was ported to v0.10 in https://github.com/nodejs/node-v0.x-archive/pull/25857

PR-URL: https://github.com/nodejs/node/pull/2843


Reviewed-By: rvagg - Rod Vagg <rod@vagg.org>
Reviewed-By: orangemocha - Alexis Campailla <orangemocha@nodejs.org>
Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>