RFR: 8365262: [IR-Framework] Add simple way to add cross-product of flags [v4]

[Manuel Hässig]

On Thu, 21 Aug 2025 06:15:46 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

>> Manuel Hässig has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Make the test work
>
> Changes requested by epeter (Reviewer).

@eme64, I completely revamped counting of failures to regex matching and made multiple and no flags in one string work.

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PR Comment: https://git.openjdk.org/jdk/pull/26762#issuecomment-3211302621