Add --incompatible_use_platforms_repo_for_constraints

This change adds an incompatible flag to disable constrains bundled with Bazel
in @bazel_tools.

Incompatible change issue:
https://github.com/bazelbuild/bazel/issues/8622

Tracking issue:
https://github.com/bazelbuild/bazel/issues/6516

RELNOTES: Incompatible change `--incompatible_use_platforms_repo_for_constraints` has been added. See https://github.com/bazelbuild/bazel/issues/8622 for details.

Closes #8625.

This is encore of https://github.com/bazelbuild/bazel/commit/332379ad6f8c49b0e087b504d73d3483c529e399. Previous implementation failed with dependency cycle with the configuration. In this attempt I don't use selects, but I've put the incompatible flag checking logic directly into the alias rule. Not nice, but get's thing done.

RELNOTES:
PiperOrigin-RevId: 254357477
22 files changed
tree: 8cf0d5189ba6828521d28b7fe80efb1b06380e11
  1. .bazelci/
  2. examples/
  3. scripts/
  4. site/
  5. src/
  6. third_party/
  7. tools/
  8. .bazelrc
  9. .gitattributes
  10. .gitignore
  11. AUTHORS
  12. BUILD
  13. CHANGELOG.md
  14. CODEOWNERS
  15. combine_distfiles.py
  16. combine_distfiles_to_tar.sh
  17. compile.sh
  18. CONTRIBUTING.md
  19. CONTRIBUTORS
  20. distdir.bzl
  21. ISSUE_TEMPLATE.md
  22. LICENSE
  23. README.md
  24. WORKSPACE
README.md

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