[lworld] Integrated: 8251504: [lworld] Support empty inline classes without -XDallowEmptyValues

[Srikanth Adayapalam]

Support empty inline classes

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Commit messages:
 - 8251504: [lworld] Support empty inline classes without -XDallowEmptyValues

Changes: https://git.openjdk.java.net/valhalla/pull/146/files
 Webrev: https://webrevs.openjdk.java.net/valhalla/146/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8251504
  Stats: 79 lines in 20 files changed: 28 ins; 32 del; 19 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/146.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/146/head:pull/146

PR: https://git.openjdk.java.net/valhalla/pull/146