RFR: 8293337: Store method handle intrinsics in AOT cache [v5]

[Ioi Lam]

> This is the 5th PR for [JEP 483: Ahead-of-Time Class Loading & Linking](https://bugs.openjdk.org/browse/JDK-8315737).
> 
> This PR is necessary to support [JDK-8293336: AOT-linking of invokedynamic for lambda expression and string concat](https://bugs.openjdk.org/browse/JDK-8293336), which needs to store Java heap objects that have native pointers to the C++ `Method` objects  returned by `SystemDictionary::find_method_handle_intrinsic()` 
> 
> These `Method` objects are created within the JVM. They do not belong to any actual Java classes. We store all these `Method` objects into the AOT cache, so that they can be referenced by other artifacts in the AOT cache.
> 
> ---
> See [here](https://bugs.openjdk.org/browse/JDK-8315737) for the sequence of dependent RFEs for implementing JEP 483.

Ioi Lam has updated the pull request incrementally with one additional commit since the last revision:

  @coleenp comments

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Changes:
  - all: https://git.openjdk.org/jdk/pull/20959/files
  - new: https://git.openjdk.org/jdk/pull/20959/files/988f101c..66157452

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20959&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20959&range=03-04

  Stats: 3 lines in 1 file changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/20959.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20959/head:pull/20959

PR: https://git.openjdk.org/jdk/pull/20959