RFR: 8261941: Use ClassLoader for unregistered classes during -Xshare:dump [v4]

[Calvin Cheung]

On Wed, 15 Sep 2021 21:13:39 GMT, Ioi Lam <iklam at openjdk.org> wrote:

>> Calvin Cheung has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   @iklam comment
>
> Marked as reviewed by iklam (Reviewer).

@iklam, @yminqi Thanks for the review.

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PR: https://git.openjdk.java.net/jdk/pull/5458