RFR: 8352869: Verify.checkEQ: extension for NaN, VectorAPI and arbitrary Objects [v12]

[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 incrementally with one additional commit since the last revision:

  For Christian

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/24224/files
  - new: https://git.openjdk.org/jdk/pull/24224/files/ccb8c4b7..b8fad69c

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24224&range=11
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24224&range=10-11

  Stats: 27 lines in 1 file changed: 0 ins; 5 del; 22 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