src: expose V8's IsNativeError() in util bindings

[cjihrig]

Exposes IsNativeError() through process.binding('util'). The tests are copied from util.isError(). The results are the same with the exception of the last one (object inheriting from Error).

R= @addaleax because of #12400 (comment)

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• commit message follows commit guidelines

Affected core subsystem(s)

src

[addaleax]

LGTM, but I’d say you can feel free to pick this into your other PR if you like

[cjihrig]

CI: https://ci.nodejs.org/job/node-test-pull-request/7671/

[TimothyGu]

new (context('Error'))()

I think that should fulfill the "new-parens" ESLint rule as well.

[cjihrig]

Landed with @TimothyGu's suggestion.

[gibfahn]

I get this error when backporting this to v6.x, which I assume means that this shouldn't land. LMK if that's not the case.

=== release test-util ===                    
Path: parallel/test-util
testtest
DEBUG: test
test

assert.js:81
  throw new assert.AssertionError({
  ^
AssertionError: false === true

[addaleax]

Fwiw the v8 patch that would fix that failure is v8/v8@a2dad04, I think.

[gibfahn]

If this is something that's worth landing on Node 6, then a backport PR with e522bcd and v8/v8@a2dad04 would be welcome.