[lworld] RFR: 8325583: [lworld] Develop a test for value class redefinition

[Alex Menkov]

Added tests for redefine/retransform of value classes

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Commit messages:
 - jcheck
 - redefine_class_tests

Changes: https://git.openjdk.org/valhalla/pull/1252/files
  Webrev: https://webrevs.openjdk.org/?repo=valhalla&pr=1252&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8325583
  Stats: 539 lines in 20 files changed: 518 ins; 3 del; 18 mod
  Patch: https://git.openjdk.org/valhalla/pull/1252.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1252/head:pull/1252

PR: https://git.openjdk.org/valhalla/pull/1252