[lworld] RFR: 8331587: [lworld] runtime/valhalla/inlinetypes/field_layout/NullMarkersTest.java fails with java.lang.RuntimeException: assertEquals: expected 4 to equal 8

[Frederic Parain]

Changes in the format of field layout dump to include the size of oops. Adjustments in the FieldLayoutAnalyzer to rely on these new entry rather than an argument passed by the caller.

Test with Mach5 tiers 1-3

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Commit messages:
 - Makes FieldAnalyzer robust against unexpected oop size

Changes: https://git.openjdk.org/valhalla/pull/1097/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1097&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8331587
  Stats: 36 lines in 4 files changed: 13 ins; 9 del; 14 mod
  Patch: https://git.openjdk.org/valhalla/pull/1097.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1097/head:pull/1097

PR: https://git.openjdk.org/valhalla/pull/1097