[code-reflection] Integrated: Schema builder seems to recreate simple layouts, close with Cascade

[Gary Frost]

More success using Schema builder to replace manually defining layouts. 
Simple layouts (S32Array and ResultTable) seem stable and consistant.
Cascade is close, but need to set 'unbound arrays'

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Commit messages:
 - Schema builder seems to recreate simple layouts, close with Cascade

Changes: https://git.openjdk.org/babylon/pull/153/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=153&range=00
  Stats: 438 lines in 4 files changed: 219 ins; 84 del; 135 mod
  Patch: https://git.openjdk.org/babylon/pull/153.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/153/head:pull/153

PR: https://git.openjdk.org/babylon/pull/153