RFR: 8315087: G1: Use uint for G1 flags indicating percentage

[Albert Mingkun Yang]

On Mon, 28 Aug 2023 10:54:56 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Simple type change (to `uint`) for consistency regarding percentage related flags.

Thanks for the review.

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PR Comment: https://git.openjdk.org/jdk/pull/15444#issuecomment-1696956192