RFR: 8293647: Avoid unnecessary boxing in jdk.hotspot.agent

[Chris Plummer]

On Mon, 12 Sep 2022 12:35:30 GMT, Andrey Turbanov <aturbanov at openjdk.org> wrote:

> Usages of methods `Integer.valueOf`, `Boolean.valueOf`, `Long.valueOf` often can be simplified by using their pair methods `parseInt`/`parseBoolean`/`parseLong`.

Marked as reviewed by cjplummer (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/10237