RFR: 8299275: Add some ClassLoaderData verification code [v2]

[Ioi Lam]

On Thu, 5 Jan 2023 19:16:09 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> I added some verification code to try to help track down JDK-8296915 (https://bugs.openjdk.org/browse/JDK-8296915).
>> Ran Test: runtime/SelectionResolution/InvokeInterfaceSuccessTest.java 100x with -XX:+VerifyBefore/AfterGC.
>> Tested with tier1-4.
>
> Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Cast to Klass

Marked as reviewed by iklam (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/11856