[code-reflection] RFR: Draft: ANF Experimental Code Model [v7]

[Ian Graves]

> Experiments with Administrative Normal Form (A-Normal Form; ANF) transformations in the code model. See https://github.com/igraves/babylon-anf for additional code using these changes.

Ian Graves has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains nine additional commits since the last revision:

 - Fixing parameter bug
 - Merge remote-tracking branch 'upstream/code-reflection' into anf-models
 - reorganizing tests
 - Remove OpWriter change. Removing ApplyStub and using synthetic params.
 - Updating transformer
 - Dialect updates. OpWriter bug fix
 - Incorporating ANF transformation
 - Moving new ops into AnfDialect
 - Additional updates

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Changes:
  - all: https://git.openjdk.org/babylon/pull/239/files
  - new: https://git.openjdk.org/babylon/pull/239/files/5017ca5f..777b2dab

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=239&range=06
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=239&range=05-06

  Stats: 308470 lines in 3930 files changed: 245684 ins; 39701 del; 23085 mod
  Patch: https://git.openjdk.org/babylon/pull/239.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/239/head:pull/239

PR: https://git.openjdk.org/babylon/pull/239