RFR: 8332340: Add JavacBench as a test case for CDS [v4]

[Ioi Lam]

On Wed, 22 May 2024 16:49:36 GMT, Ioi Lam <iklam at openjdk.org> wrote:

>> JavacBench is a test program that compiles 90 Java source files. It uses a fair amount of invokedynamic callsites, so it's good for testing CDS support for indy and lambda expressions.
>> 
>> This test was first integrated into the [leyden](https://github.com/openjdk/leyden/tree/premain) repo. Hence some of the files have copyrights in 2023.
>
> Ioi Lam has updated the pull request incrementally with one additional commit since the last revision:
> 
>   @matias9927 comments

Thanks @liach @calvinccheung @matias9927 for the review

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PR Comment: https://git.openjdk.org/jdk/pull/19256#issuecomment-2127510912