In order to satisfy the project's formatting rules, license information
was inserted into a number of files where it had been mistakenly omitted
by the original contributors [1]. In many cases, the license information
did not accurately describe the contributor or the time of contribution.
Update the information according to the information provided by the
contributors at the time each file was authored:

- atomicsHelper.js - a72ee6d9
- detachArrayBuffer.js - 70c7375b
- nans.js - b17ffc02
- nativeFunctionMatcher.js - 6b7cbb50
- proxyTrapsHelper.js d530c87b
- regexpUtils.js - 44b40e08
- tcoHelper.js - 4dc81d37

[1] 4ea2931f

Fixes gh-1453

related: https://github.com/tc39/Function-prototype-toString-revision/pull/26

```
$ python tools/lint/lint.py --whitelist lint.whitelist harness/*.js
Linting 25 files.
Linting complete. 0 errors found.
```

- Renames detachArrayBuffer-$262.detachArrayBuffer.js -> detachArrayBuffer-host-detachArrayBuffer.js (previous naming prevents command-click from terminal)

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>

Modify the regular expression for native functions' toString value to
satisfy all test cases. Correct the test file's reference to the harness
file. Re-format the test file's assertions to aid debugging in the event
of failure.

See the proposal at
https://tc39.github.io/Function-prototype-toString-revision/