[jdk17u-dev] RFR: 8285773: Replace Algorithms.eatMemory(...) with WB.fullGC() in vmTestbase/gc/gctests/ReferencesGC/ReferencesGC.java

[Goetz Lindenmaier]

I backport this for parity with 17.0.17-oracle.

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Commit messages:
 - Backport 95d38bbd6b33a965b2312fd9409c6879ca2772ab

Changes: https://git.openjdk.org/jdk17u-dev/pull/3622/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=3622&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8285773
  Stats: 31 lines in 1 file changed: 7 ins; 11 del; 13 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/3622.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/3622/head:pull/3622

PR: https://git.openjdk.org/jdk17u-dev/pull/3622