RFR: 8268227: java/foreign/TestUpcall.java still times out

[Maurizio Cimadamore]

Turns out that adding more timeout is a lost cause here. The root cause of the slowdown when running the test in debug build is:

https://bugs.openjdk.java.net/browse/JDK-8266074

Which has also caused related test issues:

https://bugs.openjdk.java.net/browse/JDK-8268095

So, the fix (at least temporarily) is to run method handle-heavy tests with the -XX:-VerifyDependency options.

On my machine, execution time of these tests on debug goes from 10 minutes down to less than 1.

Since `-XX:-VerifyDependencies` cannot be specified on non-debug build, the `-XX:+IgnoreUnrecognizedVMOptions` is also passed (thanks Vlad for the tip!).

-------------

Commit messages:
 - Disable VerifyDependencies on TestUpcall/Downcall (when in debug mode)

Changes: https://git.openjdk.java.net/jdk/pull/4355/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4355&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8268227
  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4355.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4355/head:pull/4355

PR: https://git.openjdk.java.net/jdk/pull/4355