RFR: 8332340: Add JavacBench as a test case for CDS

[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.

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Commit messages:
 - 8332340: Add JavacBench as a test case for CDS

Changes: https://git.openjdk.org/jdk/pull/19256/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19256&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8332340
  Stats: 592 lines in 4 files changed: 592 ins; 0 del; 0 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