This implements "jcmd on core files" for Linux, and for MiniDumps on Windows (MacOS is "future work"). jcmd "revives" the VM memory and .so/.dll from the core/minidump, and runs the existing native diagnostic command parser and command implementations.
--------- - [x] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - whitespace - whitespace - 8378084: Implement JEP 528: Post-Mortem Crash Analysis with jcmd Changes: https://git.openjdk.org/jdk/pull/31011/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=31011&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8378084 Stats: 6709 lines in 61 files changed: 6618 ins; 5 del; 86 mod Patch: https://git.openjdk.org/jdk/pull/31011.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/31011/head:pull/31011 PR: https://git.openjdk.org/jdk/pull/31011
