RFR: 8256182: Update qemu-debootstrap cross-compilation recipe [v3]

[Aleksey Shipilev]

On Wed, 11 Nov 2020 12:23:48 GMT, John Paul Adrian Glaubitz <glaubitz at openjdk.org> wrote:

>> Not really: `buster` is the `SUITE`, it is the argument on its own.
>
> Correct, ```buster``` is the suite (= Debian release).
> 
> You might want to use ```stable``` instead of ```buster```, then you don't need to adjust that part all the time as ```buster``` is a symlink to ```buster``` on the Debian FTP servers.

Thanks. I'd rather leave `buster`, because we know that would work with the package list the line above requires. I believe I had some problems with `libpng-dev` before. So changing the suite later would also test the include package list.

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PR: https://git.openjdk.java.net/jdk/pull/1160