Update find runfiles manifest file logic

This pull request updates the `FindManifestFileImpl` function to look for the runfiles manifest file of the binary first. If it is not found, it can use the manifest file specified in the environment variables `RUNFILES_MANIFEST_FILE` if it exists. The same logic is applied in `runfiles_src.cc` to find runfiles manifest file / directory of cc binaries.

This is done to avoid using the manifest file in `RUNFILES_MANIFEST_FILE` environment variable if the binary already has its own runfiles manifest file. While, at the same time, allow using the value in the environment variables for binaries run as data-dependency that have no runfiles manifest/directory and should use the main binary's.

Fixes: #10598

Closes #12650.

PiperOrigin-RevId: 347370712
5 files changed
tree: 817d9dcc1f0f69da0b0e632e9b7b36b82b712c2f
  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. CODEBASE.md
  15. CODEOWNERS
  16. combine_distfiles.py
  17. combine_distfiles_to_tar.sh
  18. compile.sh
  19. CONTRIBUTING.md
  20. CONTRIBUTORS
  21. distdir.bzl
  22. distdir_deps.bzl
  23. ISSUE_TEMPLATE.md
  24. LICENSE
  25. README.md
  26. WORKSPACE
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