RFR: 8266925: Add a test to verify that hidden class's members are not statically invocable

[Mandy Chung]

Add a test to verify that hidden class's members are not statically invocable based on
test/jdk/java/lang/invoke/VMAnonymousClass.java.

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Commit messages:
 - 8266925: Add a test to verify that hidden class's members are not statically invocable

Changes: https://git.openjdk.java.net/jdk/pull/3985/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3985&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8266925
  Stats: 165 lines in 2 files changed: 165 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3985.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3985/head:pull/3985

PR: https://git.openjdk.java.net/jdk/pull/3985