RFR: 8274396: Suppress more warnings on non-serializable non-transient intance fields in client libs [v2]

[Iris Clark]

On Mon, 27 Sep 2021 22:48:24 GMT, Joe Darcy <darcy at openjdk.org> wrote:

>> Follow-up changes to JDK-8231334. , augmentations to javac's Xlint:serial checking are out for review (#5709) and various client libraries would need some changes to pass under the expanded checks.
>> 
>> The changes are to suppress warnings where non-transient fields in serializable types are not declared with a type statically known to be serializable. That isn't necessarily a correctness issues, but it does merit further scrutiny.
>> 
>> I'll run a script to update the copyright year before pushing.
>
> Joe Darcy has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add comments requested in code review.

I like the comments indicating why the suppression is needed.

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Marked as reviewed by iris (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/5723