[jdk21u-dev] RFR: 8202100: Merge vm/share/InMemoryJavaCompiler w/ jdk/test/lib/compiler/InMemoryJavaCompiler

[Goetz Lindenmaier]

I backport this test change as it also goes to 21.0.9-oracle

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Commit messages:
 - Backport 7404ddf24a162cff445cd0a26aec446461988bc8

Changes: https://git.openjdk.org/jdk21u-dev/pull/1825/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1825&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8202100
  Stats: 306 lines in 12 files changed: 108 ins; 164 del; 34 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1825.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1825/head:pull/1825

PR: https://git.openjdk.org/jdk21u-dev/pull/1825