[jdk17u-dev] RFR: 8314020: Print instruction blocks in byte units

[Aleksey Shipilev]

Semi-clean backport to improve post-mortem diagnostics.

Two conflicts: 
 - In `os.hpp` we have a contextual differences due to Loom integration, applied the hunk by hand
 - In `os_linux_zero.cpp`, the contextual difference due to missing [JDK-8294211](https://bugs.openjdk.org/browse/JDK-8294211), which I do not want to backport yet; skipped the hunk

Additional testing:
 - [x] Eyeballing the artificial crash

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Commit messages:
 - Backport a602624ef46908456052146d50467c60efa636c3

Changes: https://git.openjdk.org/jdk17u-dev/pull/1686/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1686&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8314020
  Stats: 11 lines in 11 files changed: 0 ins; 0 del; 11 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1686.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1686/head:pull/1686

PR: https://git.openjdk.org/jdk17u-dev/pull/1686