RFR: 8288537: Move Devirtualizer out of hotspot/share/memory/iterator.hpp [v3]

[Ioi Lam]

On Fri, 17 Jun 2022 20:13:33 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

>> Ioi Lam has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   renamed include guard macro
>
> Sounds good to me :)

Thanks @stefank @coleenp for the review.
Passes tier-1 and builds-tier5 in our CI. GHA seems to work, too.

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PR: https://git.openjdk.org/jdk/pull/9176