RFR: 8329417: Remove objects with no pointers from relocation bitmap

[Matias Saavedra Silva]

8329417: Remove objects with no pointers from relocation bitmap

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Commit messages:
 - Sort metadata by position in the objs array
 - Merge branch 'master' into nopointers_bitmap_8329417
 - Reverted change
 - Cleanup
 - Sort rw and ro objects
 - Remove leading zeros from rw and ro ptrmaps
 - 8329417: Remove objects with no pointers from relocation bitmap

Changes: https://git.openjdk.org/jdk/pull/18803/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18803&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8329417
  Stats: 47 lines in 5 files changed: 36 ins; 1 del; 10 mod
  Patch: https://git.openjdk.org/jdk/pull/18803.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18803/head:pull/18803

PR: https://git.openjdk.org/jdk/pull/18803