[code-reflection] Integrated: Moved the ifacemapper out of HAT core to optlk

[Gary Frost]

We can now use iface mapper outside of HAT. 

This allows us to write non HAT specific tests. (just leaning on optkl.jar) and allow others to experiment with iface mapper.

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Commit messages:
 - Moved the ifacemapper out of HAT core to optlk

Changes: https://git.openjdk.org/babylon/pull/768/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=768&range=00
  Stats: 524 lines in 113 files changed: 148 ins; 116 del; 260 mod
  Patch: https://git.openjdk.org/babylon/pull/768.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/768/head:pull/768

PR: https://git.openjdk.org/babylon/pull/768