RFR: 8229186: Improve error messages for TestStringIntrinsics failures [v6]

[Aleksey Shipilev]

On Thu, 1 Oct 2020 06:18:40 GMT, Igor Ignatyev <iignatyev at openjdk.org> wrote:

>> Evgeny Nikitin has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Use SB to build TestStringIntrinsics message, avoid type guessing in ArrayDiff
>
> LGTM

@iignatev, @lmesnik: would you like to sponsor this?

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PR: https://git.openjdk.java.net/jdk/pull/112