RFR: 8297033: G1: Improve logging for Remembered Sets

[Thomas Schatzl]

On Tue, 15 Nov 2022 13:01:19 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Small change in logging for merging remset of eager reclaim candidates and collection set, in order to avoid confusion.
> 
> Test: hotspot_gc

Marked as reviewed by tschatzl (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/11165