[code-reflection] Integrated: Hat initial attempt minimize copies

[Gary Frost]

Initial attempt to minimize copies

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Commit messages:
 - added pre/post escape tracing so we can correctly mark escaping buffer uses as dirty
 - modify life example to loop inside compute method

Changes: https://git.openjdk.org/babylon/pull/201/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=201&range=00
  Stats: 217 lines in 10 files changed: 104 ins; 86 del; 27 mod
  Patch: https://git.openjdk.org/babylon/pull/201.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/201/head:pull/201

PR: https://git.openjdk.org/babylon/pull/201