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

[Ioi Lam]

> 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

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Changes:
  - all: https://git.openjdk.org/jdk/pull/19256/files
  - new: https://git.openjdk.org/jdk/pull/19256/files/ad97efa1..be84efcc

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=19256&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19256&range=02-03

  Stats: 108 lines in 1 file changed: 43 ins; 36 del; 29 mod
  Patch: https://git.openjdk.org/jdk/pull/19256.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19256/head:pull/19256

PR: https://git.openjdk.org/jdk/pull/19256