RFR: 8193559: ugly DO_JAVA_THREADS macro should be replaced [v5]

[Daniel D.Daugherty]

On Mon, 2 Aug 2021 01:50:53 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> Daniel D. Daugherty has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   kbarrett CR - simplify 'ThreadsList::Iterator::operator!=(Iterator i)'
>
> Still LGTM!
> 
> Thanks,
> David

@dholmes-ora - Thanks for the re-review!

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PR: https://git.openjdk.java.net/jdk/pull/4671