RFR: 8295191: IR framework timeout options expect ms instead of s [v4]

[Eric Nothum]

On Wed, 28 Jun 2023 11:10:27 GMT, Eric Nothum <duke at openjdk.org> wrote:

>> The flags `-DTestCompilationTimeout` and `-DWaitForCompilationTimeout` expect values in ms. The example in the README was misleading as one could infer from "default: 10s" that the flag expects values in ms. Therefore I changed the values and units in the example to ms.
>
> Eric Nothum has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Changed variable name for CustomRunTest.java

Thanks for the reviews everyone!

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PR Comment: https://git.openjdk.org/jdk/pull/14649#issuecomment-1612515153