Bump vendoring, move to proto3 release.

The proto3 library now has an official release tag, so update recipe
engine vendoring to use that tag.

BUG=chromium:628770
TEST=None

Review-Url: https://codereview.chromium.org/2236673002
25 files changed
tree: 14fb56af6a6382222d9f2a99a791e8c7041f6535
  1. bootstrap/
  2. doc/
  3. go/
  4. infra/
  5. misc/
  6. recipe_engine/
  7. recipe_modules/
  8. recipes/
  9. unittests/
  10. .gitignore
  11. AUTHORS
  12. codereview.settings
  13. CONTRIBUTORS
  14. LICENSE
  15. OWNERS
  16. PRESUBMIT.py
  17. README.md
  18. recipes.py
README.md

Recipes

Recipes are a domain-specific language (embedded in python) for specifying sequences of subprocess calls in a cross-platform and testable way.