RFR: 8352869: Verify.checkEQ: extension for NaN, VectorAPI and arbitrary Objects [v2]

[Emanuel Peter]

> We should extend the functionality of Verify.checkEQ:
> - Allow different NaN encodings to be seen as equal (by default).
> - Compare VectorAPI vectors.
> - Compare Exceptions, and their messages.
> - Compare arbitrary Objects via Reflection.
> 
> Note: this is a prerequisite for the Template Library [JDK-8352861](https://bugs.openjdk.org/browse/JDK-8352861) / https://github.com/openjdk/jdk/pull/23418.

Emanuel Peter has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Merge branch 'master' into JDK-8352869-Verify-NaN-Vector-Objects
 - clean up test
 - JDK-8352869

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/24224/files
  - new: https://git.openjdk.org/jdk/pull/24224/files/3457af00..55e7771c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24224&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24224&range=00-01

  Stats: 42339 lines in 1437 files changed: 5810 ins; 34107 del; 2422 mod
  Patch: https://git.openjdk.org/jdk/pull/24224.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24224/head:pull/24224

PR: https://git.openjdk.org/jdk/pull/24224