tools: run the tick processor without building v8

Currently, v8 native deps must be built in order to run the log
processor on node profiling output. These scripts use node instead
of d8 to remove this dependency.

This change was originally proposed to the v8 team but since the
changes are not v8 specific, we have moved the proposal here. See:
https://codereview.chromium.org/1179173009/

PR-URL: https://github.com/nodejs/node/pull/2090


Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Fedor Indutny <fedor@indutny.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>