RFR: 8307164: TestSegmentCopy times out (mainline)

[Jorn Vernee]

Port of: https://github.com/openjdk/panama-foreign/pull/827

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Commit messages:
 - 8303831: TestSegmentCopy times out

Changes: https://git.openjdk.org/jdk/pull/13741/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13741&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8307164
  Stats: 140 lines in 1 file changed: 28 ins; 42 del; 70 mod
  Patch: https://git.openjdk.org/jdk/pull/13741.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13741/head:pull/13741

PR: https://git.openjdk.org/jdk/pull/13741