RFR: 8332340: Add JavacBench as a test case for CDS [v3]

[Calvin Cheung]

On Mon, 20 May 2024 17:24:22 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:
> 
>   @calvinccheung comments

Updates look good. Thanks!

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Marked as reviewed by ccheung (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/19256#pullrequestreview-2069075764