This will make it easier to support both string types at the same time
while we convert code, and tracking down remaining uses.
One big exception is Value::to_string() in LibJS, where the name is
dictated by the ToString AO.
We have a new, improved string type coming up in AK (OOM aware, no null
state), and while it's going to use UTF-8, the name UTF8String is a
mouthful - so let's free up the String name by renaming the existing
class.
Making the old one have an annoying name will hopefully also help with
quick adoption :^)
The only complication here is that Core::Stream::File is not RefCounted
meaning we have to use OwnPtr instead of RefPtr.
Unfortunately we cannot propagate errors as some errors must be caught
and dealt with as the runner can do anything (like stop at any moment
or close pipes).
Without this the runner is waiting for new tests which will never come
and test-test262 is waiting for output which never comes since the
runner is blocked.
Also finish off a comment, and make the variables follow serenity style.
This allows running of test262 (like) tests with any runner. And thus
allows running the full test262 suite on Serenity itself.
The functionality of test-test262 is intentionally limited at first.
It does support:
- Progress updates including the special serenity terminal commands
- Outputting a per-file, to compare against other runs
- Passing any number of parameters to the runner
- Setting the batch size of the amount of tests per runner process
- Outputting a summary of the test results
