RFR: 8272558: IR Test Framework README misses some flags

[Tobias Hartmann]

On Tue, 17 Aug 2021 06:54:06 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

> The README misses `-DExcludeRandom`, `-DReportStdout` and `-DPreferCommandLineFlags`. I also changed `-DIgnoreCompilerControls=false` to `-DIgnoreCompilerControls=true` because `false` is the default and added a missing `D` to `-DTestCompilationTimeout`.
> 
> Thanks,
> Tobias

Thanks Christian!

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PR: https://git.openjdk.java.net/jdk/pull/5138