[lworld] RFR: JDK-8271405: [lworld] Redo test/jdk/java/lang/invoke/VarHandles changes for JDK-8269956

[Mandy Chung]

test/jdk/java/lang/invoke/VarHandles are generated from the template files.   Redo the fix for JDK-8269956 and update the template files.

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Commit messages:
 - JDK-8271405: [lworld] Redo test/jdk/java/lang/invoke/VarHandles changes for JDK-8269956

Changes: https://git.openjdk.java.net/valhalla/pull/516/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=516&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8271405
  Stats: 1633 lines in 33 files changed: 78 ins; 16 del; 1539 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/516.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/516/head:pull/516

PR: https://git.openjdk.java.net/valhalla/pull/516