[lworld] RFR: 8364034: [lworld] Pre-register boxing classes in class loaders [v6]

[Frederic Parain]

> Add pre-registration of boxing classes when a class loader is registered by the VM.

Frederic Parain has updated the pull request incrementally with one additional commit since the last revision:

  Remove debugging code

-------------

Changes:
  - all: https://git.openjdk.org/valhalla/pull/1517/files
  - new: https://git.openjdk.org/valhalla/pull/1517/files/671136d7..213aed30

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=1517&range=05
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=1517&range=04-05

  Stats: 3 lines in 1 file changed: 0 ins; 3 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/1517.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/1517/head:pull/1517

PR: https://git.openjdk.org/valhalla/pull/1517