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

[Serguei Spitsyn]

On Mon, 7 Nov 2022 20:40:33 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> 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

> We might not need this. appendClasspath is thread safe so it's okay for several
> agents calling appendToSystemClassLoaderSearch at around the same time.
> I don't think it needs to sycnrhonize with anything else.

I'm thinking about a good place where to place a comment about this.
Probably, it can be placed before the method `appendToClassPathForInstrumentation`.

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