RFR: 8320750: Allow a testcase to run with muliple -Xlog

Wed Nov 29 09:24:08 UTC 2023

On Tue, 28 Nov 2023 23:54:44 GMT, Dean Long <dlong at openjdk.org> wrote:

> What about -Xlog:gc=debug,safepoint=trace and other -XX flags that take a comma-separated list?

`-XX` flags are handled by JTREG itself (not VMProps), I `filter` them out and ignore them. And the value of `-Xlog` is ignored.

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PR Comment: https://git.openjdk.org/jdk/pull/16824#issuecomment-1831515660