tools: add tap output to cpplint

Implement a crude TAP13 writer for cpplint. Does its job and
not much else. Only supports writing TAP output to file,
not vs7 or emacs formats.

PR-URL: https://github.com/nodejs/node/pull/3448


Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>