RFR: 8296472: Remove ObjectLocker around appendToClassPathForInstrumentation call [v3]

[Coleen Phillimore]

> This patch moves the acquisition of the boot class loader lock out of the JVM and into the Java function.
> Tested with tier1-4, and jvmti and jdi tests locally.

Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:

  really revert the file

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/11023/files
  - new: https://git.openjdk.org/jdk/pull/11023/files/781b44fc..66e9133b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=11023&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=11023&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/11023.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11023/head:pull/11023

PR: https://git.openjdk.org/jdk/pull/11023