RFR: 8294976: Convert Runtime classes to use the ClassFile API instead of ASM [v6]

[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:

  use withMethodBody() instead of withMethod()

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18271/files
  - new: https://git.openjdk.org/jdk/pull/18271/files/d4f181f8..a831d2bc

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18271&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18271&range=04-05

  Stats: 21 lines in 1 file changed: 1 ins; 3 del; 17 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