RFR: 8297053: Specify new default byte alignment for native allocators

[Igor Rudenko]

Use the largest known value for default allocation alignment so that align value that less than 16 (typical align for modern systems) turns to 16

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Commit messages:
 - JDK-8297053: Specify new default byte alignment for native allocators

Changes: https://git.openjdk.org/jdk/pull/29156/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29156&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8297053
  Stats: 8 lines in 1 file changed: 8 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/29156.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29156/head:pull/29156

PR: https://git.openjdk.org/jdk/pull/29156