RFR: 8298576: Serial: Drop inline modifier for some definitions in MarkSweep

Mon Dec 12 13:10:08 UTC 2022

Simple change of moving some code from `inline.hpp` to `cpp`.

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Commit messages:
 - s1-move-to-cpp

Changes: https://git.openjdk.org/jdk/pull/11633/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11633&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8298576
  Stats: 85 lines in 2 files changed: 40 ins; 41 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/11633.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11633/head:pull/11633

PR: https://git.openjdk.org/jdk/pull/11633