RFR: JDK-8301661: Enhance os::pd_print_cpu_info on macOS and Windows [v3]

[Matthias Baesken]

> Enhance os::pd_print_cpu_info on macOS and Windows by information about CPU frequency and caches.
> On Windows , this info can be obtained by the Processor Power Information API or "powerbase" (CallNtPowerInformation , see https://learn.microsoft.com/en-us/windows/win32/api/powerbase/nf-powerbase-callntpowerinformation ); this is available since Windows Server 2003/XP.
> On macOS, sysctlbyname can be used.

Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:

  Reuse processor count if possible, adjust output a bit

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Changes:
  - all: https://git.openjdk.org/jdk/pull/12403/files
  - new: https://git.openjdk.org/jdk/pull/12403/files/08bba6d1..12cf8db3

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=12403&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12403&range=01-02

  Stats: 14 lines in 1 file changed: 5 ins; 1 del; 8 mod
  Patch: https://git.openjdk.org/jdk/pull/12403.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12403/head:pull/12403

PR: https://git.openjdk.org/jdk/pull/12403