RFR: Merge lworld [v2]

[Vicente Romero]

> PR to merge lword into universal-tvars

Vicente Romero 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 three additional commits since the last revision:

 - Merge branch 'lworld' into universal-tvars_merge_lworld
 - Merge lworld
 - Merge lworld

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Changes:
  - all: https://git.openjdk.java.net/valhalla/pull/518/files
  - new: https://git.openjdk.java.net/valhalla/pull/518/files/2a6849eb..2a6849eb

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=valhalla&pr=518&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=valhalla&pr=518&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/518.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/518/head:pull/518

PR: https://git.openjdk.java.net/valhalla/pull/518