To add a LICENSE file along with the v8_inspector code, we need to
pick up v8_inspector from an intermediate repository:
https://github.com/pavelfeldman/v8_inspector. This repo still tracks
upstream code in Blink.

This roll also picks up the latest v8_inspector from upstream fixing
a few issues.

* Pickup commit id bc60957 from pavelfeldman/v8_inspector
* Update node.gyp to adapt to the new file paths
* Update the DevTools hash for the devtools frontend.

Fixes: nodejs#7123
Fixes: nodejs#7736
Fixes: nodejs#7734
PR-URL: nodejs#7796
Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: jasnell - James M Snell <jasnell@gmail.com>

jinja.el is not shipped as part of the distribution, and neither is
it used in the build. While not strictly necessary, removing it
simplifies life from a licensing point of view.

PR-URL: nodejs#7796
Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: jasnell - James M Snell <jasnell@gmail.com>

Start including the license from v8_inspector and its build time
dependencies: jinja2 and markupsafe.

PR-URL: nodejs#7796
Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: jasnell - James M Snell <jasnell@gmail.com>

Created using `tools/license-builder.sh`.

PR-URL: nodejs#7796
Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: jasnell - James M Snell <jasnell@gmail.com>

PR-URL: nodejs#7796
Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: jasnell - James M Snell <jasnell@gmail.com>