RFR: adding support for stdin [v4]

[Jiří Vaněk]

On Tue, 23 Aug 2022 02:19:01 GMT, Leonid Kuskov <lkuskov at openjdk.org> wrote:

> > In similar way I woudl like to rework also stdout handling - to made asmtools reusabel in other projects, the strict depndece on files must be removed.
> 
> I would highly appreciate it if you could do this.

yy, will try.

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PR: https://git.openjdk.org/asmtools/pull/32