[jdk21u-dev] RFR: 6942632: Hotspot should be able to use more than 64 logical processors on Windows

[Saint Wesonga]

Clean backport of support for >64 logical processors on Windows (https://github.com/openjdk/jdk/pull/17576) to jdk21.

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Commit messages:
 - Backport f15d423fb5451c7c8f2d1007235ebf8aa79a403e

Changes: https://git.openjdk.org/jdk21u-dev/pull/881/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=881&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-6942632
  Stats: 760 lines in 10 files changed: 702 ins; 40 del; 18 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/881.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/881/head:pull/881

PR: https://git.openjdk.org/jdk21u-dev/pull/881