[lworld] Integrated: 8244713: [lworld] V.ref class should not inadvertently carry over attributes from V.class

[Srikanth Adayapalam]

Various tests to ensure that attributes are not simply carried over

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Commit messages:
 - 8244713: V.ref class should not inadvertently carry over attributes from V.class

Changes: https://git.openjdk.java.net/valhalla/pull/165/files
 Webrev: https://webrevs.openjdk.java.net/valhalla/165/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8244713
  Stats: 252 lines in 2 files changed: 252 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/165.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/165/head:pull/165

PR: https://git.openjdk.java.net/valhalla/pull/165