[lworld] RFR: 8280980: [lworld] MethodHandle and VarHandle support for value classes

[Mandy Chung]

Add new test cases for value classes.

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Commit messages:
 - Fix StaticFactoryTest not to run noInflation mode
 - 8280980: [lworld] MethodHandle and VarHandle support for value classes

Changes: https://git.openjdk.java.net/valhalla/pull/624/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=624&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8280980
  Stats: 432 lines in 10 files changed: 228 ins; 137 del; 67 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/624.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/624/head:pull/624

PR: https://git.openjdk.java.net/valhalla/pull/624