RFR: 8202100: Merge vm/share/InMemoryJavaCompiler w/ jdk/test/lib/compiler/InMemoryJavaCompiler [v4]

[Ramkumar Sunderbabu]

> Merging vm folder's InMemoryJavaCompiler into jdk folder's merge InMemoryJavaCompiler so that maintenance is easy.
> 
> Testing done for
> Tiers 1,2,3
> test/hotspot/jtreg tests

Ramkumar Sunderbabu has updated the pull request incrementally with one additional commit since the last revision:

  Added javadoc for the new method

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/21641/files
  - new: https://git.openjdk.org/jdk/pull/21641/files/2d5ce321..17d73a62

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21641&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21641&range=02-03

  Stats: 8 lines in 1 file changed: 8 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/21641.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21641/head:pull/21641

PR: https://git.openjdk.org/jdk/pull/21641