[jdk17u-dev] RFR: 8277893: Arraycopy stress tests

[Aleksey Shipilev]

Clean backport to improve testing.

Additional testing:
 - [x] Linux x86_64 fastdebug passes `hotspot_compiler_arraycopy`

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Commit messages:
 - Backport 29bd73638a22d341767a1266723a7d7263e17093

Changes: https://git.openjdk.java.net/jdk17u-dev/pull/242/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u-dev&pr=242&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8277893
  Stats: 1154 lines in 12 files changed: 1153 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk17u-dev/pull/242.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u-dev pull/242/head:pull/242

PR: https://git.openjdk.java.net/jdk17u-dev/pull/242