RFR: JDK-8307356: Metaspace: simplify BinList handling [v2]

[Thomas Stuefe]

On Thu, 4 May 2023 11:45:18 GMT, Roman Kennke <rkennke at openjdk.org> wrote:

>> Thomas Stuefe has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   feedback roman
>
> Looks mostly ok. I'd keep MinWordSize constants, though.

Thank you @rkennke. I re-added MinWordSize to BinList and FreeBlocks, but left the "1" constants in the tests since the tests are supposed to test that we can in fact store 1-word sized memory fragments in these containers.

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PR Comment: https://git.openjdk.org/jdk/pull/13776#issuecomment-1534715336