[code-reflection] Integrated: Hat move schema to ifacemapper and switch ViolaJones buffers to used schema

[Gary Frost]

Schema now part of iface mapper
To prove we have the same layout, ViolaJones example now uses schema rather than layout to bind fields.

-------------

Commit messages:
 - ViolaJones example switched to using schema
 - Make ViolaJones check layout from schema and embedded layout
 - Move schema to ifacemapper - step one

Changes: https://git.openjdk.org/babylon/pull/170/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=170&range=00
  Stats: 1755 lines in 20 files changed: 774 ins; 916 del; 65 mod
  Patch: https://git.openjdk.org/babylon/pull/170.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/170/head:pull/170

PR: https://git.openjdk.org/babylon/pull/170