RFR: 8295104: Break VarHandle tests into separate @test to reduce test execution time

[Alan Bateman]

On Mon, 10 Oct 2022 23:16:20 GMT, Mandy Chung <mchung at openjdk.org> wrote:

> This separates `@run` into its own `@test` that they can be run concurrently.

I wouldn't expect it to change the execution time of tier1_part1 but it may help with test selection, maybe combined with putting understandable ids or jtreg keywords. Maybe there is a question here on whether individual tests should exercise -Xint and the compiler modes themselves or whether larger groups of tests should be run with these options in higher tiers.

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PR: https://git.openjdk.org/jdk/pull/10641