[crac-17] RFR: Merge jdk17u:jdk-17.0.12+7 [v2]

[Radim Vansa]

> There were no substantial conflicts in the merge.

Radim Vansa has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 77 commits:

 - Merge tag 'jdk-17.0.12+7' into openjdk_17.0.12+7
   
   Added tag jdk-17.0.12+7 for changeset 833f65ecb304
 - Print better diagnostics for spawning CRIU
   
   Reviewed-by: akozlov
 - C++ize criuengine
   
   Reviewed-by: akozlov
 - Fix wrong if conditional braces hidden by wrong indentation.
   
   Reviewed-by: akozlov
 - macOS build fixes
   
   Reviewed-by: rvansa
 - Handle open file descriptors with configurable policies
   
   Reviewed-by: akozlov
 - CRaC related documentation in JDK classes using custom tag
   
   Reviewed-by: akozlov
 - Implement: -XX:+UseZGC is currently unsupported for -XX:CRaCCheckpointTo
   
   Reviewed-by: rvansa, akozlov
 - Win/Mac build for CRaC
   
   Reviewed-by: akozlov
 - Selectable Global Context implementation
   
   Reviewed-by: rvansa
 - ... and 67 more: https://git.openjdk.org/crac/compare/833f65ec...0ca5f263

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Changes: https://git.openjdk.org/crac/pull/157/files
  Webrev: https://webrevs.openjdk.org/?repo=crac&pr=157&range=01
  Stats: 15098 lines in 230 files changed: 14770 ins; 155 del; 173 mod
  Patch: https://git.openjdk.org/crac/pull/157.diff
  Fetch: git fetch https://git.openjdk.org/crac.git pull/157/head:pull/157

PR: https://git.openjdk.org/crac/pull/157