[perl #132111] Make it possible to change the buffer size on a handle (.set-buffer?)

[Aleks-Daniel Jakimenko-Aleksejev via RT]

Once this is implemented, replace nqp::setbuffersizefh with it in Test.pm6.

On 2017-09-17 08:38:34, alex.jakime...@gmail.com wrote:
> Using nqp, one can do something like:
>
> nqp::setbuffersizefh(nqp::getstdout(), 0);
>
> But it would be nice if it was available from Perl 6 level.
>
>
> See also: https://github.com/rakudo/rakudo/pull/1160