[lilliput-jdk17u:lilliput] RFR: 8308423: [Lilliput/JDK17] Cherry-pick GC forwarding

[Roman Kennke]

I'd like to pick up the improvements that have been made in full-GC and self-forwarding in the upstream issues [JDK-8305896](https://bugs.openjdk.org/browse/JDK-8305896) and [JDK-8305898](https://bugs.openjdk.org/browse/JDK-8305898). Let's port them to Lilliput/JDK17.

The version in upstream PR uses resourceHash.hpp as fallback-table. Unfortunately, that doesn't cleanly work with the JDK17 version of resourceHash.hpp, so I used an earlier version with a self-implemented fallback-table.

Testing:
 - [x] hotspot_gc
 - [x] tier1
 - [ ] tier2

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Commit messages:
 - 8308423: [Lilliput/JDK17] Cherry-pick GC forwarding

Changes: https://git.openjdk.org/lilliput-jdk17u/pull/22/files
 Webrev: https://webrevs.openjdk.org/?repo=lilliput-jdk17u&pr=22&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8308423
  Stats: 847 lines in 40 files changed: 491 ins; 132 del; 224 mod
  Patch: https://git.openjdk.org/lilliput-jdk17u/pull/22.diff
  Fetch: git fetch https://git.openjdk.org/lilliput-jdk17u.git pull/22/head:pull/22

PR: https://git.openjdk.org/lilliput-jdk17u/pull/22