RFR: 8282072: G1: Rename CardSetPtr to CardSetContainerPtr [v4]

[Ivan Walulya]

On Wed, 16 Mar 2022 14:01:55 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Ivan Walulya has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   space
>
> Marked as reviewed by ayang (Reviewer).

Thanks @albertnetymk and @tschatzl for the reviews.

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PR: https://git.openjdk.java.net/jdk/pull/7816