RFR: 8367743: G1: Use named constants for G1CSetCandidateGroup group ids [v2]

[Thomas Schatzl]

> Hi all,
> 
>   please review this refactoring to use named constants for cset candidate group ids instead of raw integers.
> 
> Testing: gha, local compilation, use in another patch for weeks
> 
> Thanks,
>   Thomas

Thomas Schatzl has updated the pull request incrementally with one additional commit since the last revision:

  * fix id assigment in printregionlivenessclosure

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/27309/files
  - new: https://git.openjdk.org/jdk/pull/27309/files/a242e6ca..f74dbcf4

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27309&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27309&range=00-01

  Stats: 5 lines in 1 file changed: 0 ins; 2 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/27309.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27309/head:pull/27309

PR: https://git.openjdk.org/jdk/pull/27309