RFR: 8289612: Change hotspot/jtreg tests to not use Thread.stop

[Leonid Mesnik]

The tests are updated to don't use Thread.stop(). Tests whose intention is to verify async exception updated to use jvmti StopThread.

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Commit messages:
 - Merge branch 'master' of https://github.com/openjdk/jdk
 - fix

Changes: https://git.openjdk.org/jdk/pull/9505/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9505&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8289612
  Stats: 123 lines in 8 files changed: 104 ins; 6 del; 13 mod
  Patch: https://git.openjdk.org/jdk/pull/9505.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9505/head:pull/9505

PR: https://git.openjdk.org/jdk/pull/9505