[jdk21u-dev] RFR: 8334738: os::print_hex_dump should optionally print ASCII

[Martin Doerr]

Mostly clean backport of [JDK-8334738](https://bugs.openjdk.org/browse/JDK-8334738). Also see the description of the older backport which is outdated: https://github.com/openjdk/jdk21u-dev/pull/855

- os_windows_aarch64.cpp: One hunk is no longer needed after [JDK-8343343](https://bugs.openjdk.org/browse/JDK-8343343) which is already in 21.0.7.
- globalDefinitions.hpp: Basically clean, but context is different at one hunk.
- test_os.cpp: Manual integration was necessary because of unrelated changes in the context. The new version is almost identical to the jdk25 version without [JDK-8337662](https://bugs.openjdk.org/browse/JDK-8337662) which is also a candidate for backport after this one.

Added fix for [JDK-8335906](https://bugs.openjdk.org/browse/JDK-8335906) (see 2nd commit).

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Commit messages:
 - Backport 8f62f31dff564289a2422d58e8ecd5062d443b81
 - Backport 38a578d547f39c3637d97f5e0242f4a69f3bbb31

Changes: https://git.openjdk.org/jdk21u-dev/pull/2539/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2539&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8334738
  Stats: 159 lines in 7 files changed: 68 ins; 15 del; 76 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2539.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2539/head:pull/2539

PR: https://git.openjdk.org/jdk21u-dev/pull/2539