[jdk17u-dev] RFR: 8212961: [TESTBUG] vmTestbase/nsk/stress/jni/ native code cleanup

[Goetz Lindenmaier]

I backport this for parity with 17.0.7-oracle.

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

Commit messages:
 - Backport fde183130bc6379fe0d4624bbeaf252d0e9a15c8

Changes: https://git.openjdk.org/jdk17u-dev/pull/1010/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1010&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8212961
  Stats: 777 lines in 8 files changed: 111 ins; 121 del; 545 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1010.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/1010/head:pull/1010

PR: https://git.openjdk.org/jdk17u-dev/pull/1010