RFR: 8373421: Parallel: Rename young generation eden and survivor space pool

Wed Dec 10 13:18:41 UTC 2025

Trivial renaming two `*SpacePool` classes:

EdenMutableSpacePool -> PSEdenSpacePool
SurvivorMutableSpacePool -> PSSurvivorSpacePool

Test: tier1

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Commit messages:
 - pgc-space-pool-rename

Changes: https://git.openjdk.org/jdk/pull/28744/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28744&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8373421
  Stats: 28 lines in 3 files changed: 0 ins; 0 del; 28 mod
  Patch: https://git.openjdk.org/jdk/pull/28744.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28744/head:pull/28744

PR: https://git.openjdk.org/jdk/pull/28744