[lworld] RFR: 8273018: Emit parameter annotations on primitive record factories

[Jesper Steen Møller]

This fix copies parameter names and annotations from constructor into primitive class factory.

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Commit messages:
 - 8273018: Emit parameter annotations on primitive record factories

Changes: https://git.openjdk.java.net/valhalla/pull/541/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=541&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273018
  Stats: 85 lines in 2 files changed: 85 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/541.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/541/head:pull/541

PR: https://git.openjdk.java.net/valhalla/pull/541