[code-reflection] RFR: Test Switch Expression lowering when case is constant [v2]

[Mourad Abbay]

> Test Switch Expression lowering when case is constant.

Mourad Abbay 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 six additional commits since the last revision:

 - Create overloads of method toValue.
 - Merge branch 'code-reflection' into test-sw-lowering
 - Merge branch 'code-reflection' into test-sw-lowering
 - Remove misleading comment
 - Test switch expression lowering when case is constant
 - Remove switch expression lowering tests

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Changes:
  - all: https://git.openjdk.org/babylon/pull/169/files
  - new: https://git.openjdk.org/babylon/pull/169/files/8f133de1..1457f1fe

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=169&range=01
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=169&range=00-01

  Stats: 6288 lines in 114 files changed: 2789 ins; 2950 del; 549 mod
  Patch: https://git.openjdk.org/babylon/pull/169.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/169/head:pull/169

PR: https://git.openjdk.org/babylon/pull/169