RFR: CODETOOLS-7902946: jcstress: Upgrade JNA to 5.8.0

[Aleksey Shipilev]

jcstress still uses JNA 4.5.2. We can upgrade to 5.8.0 and thus take in bugfixes and extended platform support.

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Commit messages:
 - CODETOOLS-7902946: jcstress: Upgrade JNA to 5.8.0

Changes: https://git.openjdk.java.net/jcstress/pull/54/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jcstress&pr=54&range=00
  Issue: https://bugs.openjdk.java.net/browse/CODETOOLS-7902946
  Stats: 3 lines in 2 files changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jcstress/pull/54.diff
  Fetch: git fetch https://git.openjdk.java.net/jcstress pull/54/head:pull/54

PR: https://git.openjdk.java.net/jcstress/pull/54