RFR: 8352645: Add tool support to check order of includes [v6]

[Doug Simon]

On Tue, 1 Apr 2025 09:25:17 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

>> Doug Simon has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   convert Windows path to Unix path
>
> test/hotspot/jtreg/TEST.groups line 142:
> 
>> 140: 
>> 141: tier1_common = \
>> 142:   sources \
> 
> I don't understand this change.  How does this end up doing anything different than before?

This makes `sources` be tested in GHA: https://github.com/openjdk/jdk/blob/a1ab1d8de411aace21decd133e7e74bb97f27897/.github/workflows/test.yml#L88

An alternative would be to add a separate GHA jobs just for `sources`:

          - test-name: 'hs/tier1 sources'
            test-suite: 'test/hotspot/jtreg/:tier1_sources'
            debug-suffix: -debug

Given how small `sources` is ([currently only 1 test](https://github.com/openjdk/jdk/tree/master/test/hotspot/jtreg/sources)), it felt like it should just be folded into common.

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PR Review Comment: https://git.openjdk.org/jdk/pull/24247#discussion_r2023111780