[jdk8u-dev] RFR: 8340387: Update OS detection code to recognize Windows Server 2025

[Dmitry Cherepanov]

Backport for parity with Oracle.

Almost clean backport after adjusting paths. The only conflict is in copyright years (in java_props_md.c), applied manually.

Thanks.

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Commit messages:
 - Backport 34cddfbedd20d5804cab8044fbc402564e98eb9c

Changes: https://git.openjdk.org/jdk8u-dev/pull/655/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=655&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8340387
  Stats: 11 lines in 2 files changed: 8 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/655.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/655/head:pull/655

PR: https://git.openjdk.org/jdk8u-dev/pull/655