RFR: 7903138: os.simpleArch is x64 for linux-riscv64 in @require context [v5]

[Jonathan Gibbons]

On Sat, 10 Dec 2022 14:56:14 GMT, Feilong Jiang <fjiang at openjdk.org> wrote:

>> RISC-V Port has been integrated into JDK mainline recently ([JDK-8276799](https://bugs.openjdk.java.net/browse/JDK-8276799)). Set simpleArch to riscv64 when os.arch is riscv64
>> 
>> Tested on  Linux riscv64. With the patch, [test/hotspot/jtreg/compiler/vectorapi/TestMaskedMacroLogicVector.java](https://github.com/openjdk/jdk/blob/jdk-19%2B13/test/hotspot/jtreg/compiler/vectorapi/TestMaskedMacroLogicVector.java) was successfully skipped.
>
> Feilong Jiang has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains five commits:
> 
>  - Merge branch 'master' of https://github.com/openjdk/jtreg into riscv64-simplearch
>  - Merge branch 'master' of https://github.com/openjdk/jtreg into riscv64-simplearch
>  - remove riscv in comment
>  - update comments
>  - os.simpleArch is x64 for linux-riscv64 in @require context

Skara has dropped the `sponsor` label.

@feilongjiang needs to enter `/integrate` again, before this can be sponsored.

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PR: https://git.openjdk.org/jtreg/pull/66