RFR: 8312524: [JVMCI] serviceability/dcmd/compiler/CompilerQueueTest.java fails

[Doug Simon]

This PR adds logic to the CompileBroker for implementing `WhiteBox.lockCompilation()` when `UseJVMCICompiler` is true.

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Commit messages:
 - implement whitebox compilation locking for JVMCI in CompileBroker

Changes: https://git.openjdk.org/jdk/pull/14979/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14979&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8312524
  Stats: 18 lines in 1 file changed: 14 ins; 3 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/14979.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14979/head:pull/14979

PR: https://git.openjdk.org/jdk/pull/14979