RFR: 8323993: Serial: Refactor gc_prologue and gc_epilogue

Wed Jan 17 13:14:01 UTC 2024

Simple moving methods from super class to subclasses.

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

Commit messages:
 - s1-gc-pre-post

Changes: https://git.openjdk.org/jdk/pull/17463/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17463&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8323993
  Stats: 38 lines in 5 files changed: 0 ins; 30 del; 8 mod
  Patch: https://git.openjdk.org/jdk/pull/17463.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17463/head:pull/17463

PR: https://git.openjdk.org/jdk/pull/17463