RFR: 8265343: Update Debian-based cross-compilation recipes

[Aleksey Shipilev]

On Sun, 18 Apr 2021 17:33:56 GMT, John Paul Adrian Glaubitz <glaubitz at openjdk.org> wrote:

>> After [JDK-8257913](https://bugs.openjdk.java.net/browse/JDK-8257913), we do not need to set a whole lot of options for cross-compiled builds. Docs should be updated to reflect that fact. Also put in more configurations that are buildable with Debian ports: these build routinely at [builds.shipilev.net](https://builds.shipilev.net/openjdk-jdk/).
>> 
>> Maybe @glaubitz wants to chime in here too :)
>
> @shipilev Nice work. I'll have a go at testing this next week. I didn't get to look this week as I was busy with my dayjob.
> 
> In any case, I'm very happy to see build instructions for so many architectures :-). I should also try to push some more Debian patches upstream so that most cross-builds will work out of the box.

@glaubitz Yes, please take a look if you can. If not, I'll integrate this as is.

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PR: https://git.openjdk.java.net/jdk/pull/3545