[jdk25u-dev] RFR: 8359868: Shenandoah: Free threshold heuristic does not use SoftMaxHeapSize

[William Kemper]

Not clean, but conflicts were trivial to resolve. We have been running versions of this patch in production for months now.

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Commit messages:
 - Backport 974ad4e8cdddee7d932e8375258067f9d2ca6a8b

Changes: https://git.openjdk.org/jdk25u-dev/pull/195/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u-dev&pr=195&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8359868
  Stats: 6 lines in 3 files changed: 0 ins; 3 del; 3 mod
  Patch: https://git.openjdk.org/jdk25u-dev/pull/195.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u-dev.git pull/195/head:pull/195

PR: https://git.openjdk.org/jdk25u-dev/pull/195