[lworld] RFR: 8378086: [lworld] duplication between ObjArrayKlass and refined classes [v2]

[Stefan Karlsson]

> I have a bunch of patches to remove some code duplication, redundant setting of fields, unneeded dispatch code.
> 
> I've tested this with tier1-3.
> 
> I'm opening this up as one PR, depending on #2033, but it could be split up into multiple dependent PRs. It could be good to look at each commit individually when making a first pass of over this PR.
> 
> I'll add a guide to the individual commits as a comment after the summary.

Stefan Karlsson has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 23 additional commits since the last revision:

 - Add temporary assert
 - Restore ObjArrayKlass private
 - Remove create_element_klass_array_name duplication
 - Remove ObjArrayKlass::oop_verify_on implementation
 - Remove ObjArrayKlass::oop_size
 - Remove ObjArrayKlass::copy_array
 - Fix incorrect reference to RefArrayKlass::
 - Deduplicate array klass code
 - Fixes from Stefan's comments
 - Fix more use sites and some TRAPS returns
 - ... and 13 more: https://git.openjdk.org/valhalla/compare/d8ceca56...afa01e35

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

Changes:
  - all: https://git.openjdk.org/valhalla/pull/2117/files
  - new: https://git.openjdk.org/valhalla/pull/2117/files/afa01e35..afa01e35

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=2117&range=01
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=2117&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/valhalla/pull/2117.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/2117/head:pull/2117

PR: https://git.openjdk.org/valhalla/pull/2117