StringCharBuffer and bulk get

[Brett Okken]

> It looks like only CharBuffer.getChars is broken so the rest of the change can stay. I filed this issue to track it:
>
> https://bugs.openjdk.org/browse/JDK-8361299
>
> The fix is straightforward but will break a test and require a CSR.


Looks like the testNG GetChars has

cb.getChars(cb.position(), cb.limit(), dst, 0);

but that should have been

cb.getChars(0, cb.remaining(), dst, 0);

or

cb.getChars(0, cb.length(), dst, 0);

- Brett