RFR: 8264734: Some SA classes could use better hashCode() implementation [v4]

[Mitsuru Kariya]

On Tue, 11 May 2021 06:35:43 GMT, Mitsuru Kariya <github.com+2217224+kariya-mitsuru at openjdk.org> wrote:

>> The current `hashCode` implementation of SA's Address subclasses ignores the upper 32 bits of the long value.
>> This PR changes to use `Long.hashCode` instead.
>
> Mitsuru Kariya has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update copyright

Hi,

Would anyone sponsor it?

Best regards,
Mitsuru

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PR: https://git.openjdk.java.net/jdk/pull/3522