[code-reflection] RFR: Support conversions of primitives in testing context [v6]

[Mourad Abbay]

> Support conversions of primitives in testing context.

Mourad Abbay has updated the pull request incrementally with two additional commits since the last revision:

 - Refactor to avoid allocation everytime we call isNarrowingPrimitiveConv
 - Handle the case when type check is true

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Changes:
  - all: https://git.openjdk.org/babylon/pull/265/files
  - new: https://git.openjdk.org/babylon/pull/265/files/4e249a1c..ee676d38

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=265&range=05
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=265&range=04-05

  Stats: 28 lines in 1 file changed: 8 ins; 5 del; 15 mod
  Patch: https://git.openjdk.org/babylon/pull/265.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/265/head:pull/265

PR: https://git.openjdk.org/babylon/pull/265