[code-reflection] RFR: restoring older versions of CoreOp and Interpreter

[Ian Graves]

restoring older versions of CoreOp and Interpreter

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Commit messages:
 - restoring older versions

Changes: https://git.openjdk.org/babylon/pull/269/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=269&range=00
  Stats: 370 lines in 2 files changed: 245 ins; 50 del; 75 mod
  Patch: https://git.openjdk.org/babylon/pull/269.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/269/head:pull/269

PR: https://git.openjdk.org/babylon/pull/269