[code-reflection] RFR: Avoid boxing when concatenating a string with a primitive [v2]

[Mourad Abbay]

> Avoid boxing when concatenating a string with a primitive.

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

 - remove comment
 - remove outdated comment

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Changes:
  - all: https://git.openjdk.org/babylon/pull/226/files
  - new: https://git.openjdk.org/babylon/pull/226/files/bf55c1c0..51550f88

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=226&range=01
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=226&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 2 del; 0 mod
  Patch: https://git.openjdk.org/babylon/pull/226.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/226/head:pull/226

PR: https://git.openjdk.org/babylon/pull/226