[code-reflection] Integrated: More HatOp.Ptr experiments

[Gary Frost]

Building intra for adding HatOp.HatPtr ops and types to aid SSA ports

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Commit messages:
 - More HatOp.Ptr experiments

Changes: https://git.openjdk.org/babylon/pull/146/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=146&range=00
  Stats: 584 lines in 6 files changed: 550 ins; 9 del; 25 mod
  Patch: https://git.openjdk.org/babylon/pull/146.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/146/head:pull/146

PR: https://git.openjdk.org/babylon/pull/146