RFR: 8294976: Convert Runtime classes to use the ClassFile API instead of ASM [v5]

[Oussama Louati]

> 8294976: Convert Runtime classes to use the ClassFile API instead of ASM

Oussama Louati has updated the pull request incrementally with one additional commit since the last revision:

  Add --enable-preview to use classFile API, and fix test failing.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/18271/files
  - new: https://git.openjdk.org/jdk/pull/18271/files/355d735d..d4f181f8

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18271&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18271&range=03-04

  Stats: 14 lines in 1 file changed: 8 ins; 3 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/18271.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18271/head:pull/18271

PR: https://git.openjdk.org/jdk/pull/18271