[code-reflection] RFR: Represents literals of type byte/short as permitted in the Java language [v4]

[Mourad Abbay]

> Before this PR, we had literals of type byte/short in the code model, but that's not permitted by the Java language. In Java, a literals of type byte/short is a literal of type int + conversion to the type byte/short.

Mourad Abbay has updated the pull request incrementally with one additional commit since the last revision:

  Add tests to make sure literals of type byte/short are created the way Java language permit.

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Changes:
  - all: https://git.openjdk.org/babylon/pull/351/files
  - new: https://git.openjdk.org/babylon/pull/351/files/c9326ccb..c6614d18

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=351&range=03
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=351&range=02-03

  Stats: 116 lines in 2 files changed: 116 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/babylon/pull/351.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/351/head:pull/351

PR: https://git.openjdk.org/babylon/pull/351