RFR: 8339710: Avoid initializing AccessFlag related classes in write-only cases [v2]

[Chen Liang]

On Sun, 8 Sep 2024 16:48:36 GMT, Claes Redestad <redestad at openjdk.org> wrote:

>> This PR reduces number of classes loaded on a minimal lambda bootstrapping test by 4 by avoiding the need to pull in some AccessFlag classes.
>
> Claes Redestad has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add DMB.withFlags for consistency

Marked as reviewed by liach (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/20904#pullrequestreview-2288573681