protobuf

Protocol Buffers - Google's data interchange format (grpc依赖) https://developers.google.com/protocol-buffers/

Sandy Zhang 22e845e279 Add a release flag to disambiguate between release and local config_settings. This flag will be set in UPB which will be submitted separately due to version skew between repos. This attempts to fix the following error from local and release settings both matching. ``` ERROR: /workspace/_build/out/external/upb/python/dist/BUILD.bazel:251:9: Illegal ambiguous match on configurable attribute "platform" in @upb//python/dist:binary_wheel: @upb//python/dist:linux_x86_64_local @upb//python/dist:windows_x86_64 Multiple matches are not allowed unless one is unambiguously more specialized or they resolve to the same value. See https://bazel.build/reference/be/functions#select. ``` PiperOrigin-RevId: 553184373		2 years ago
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BUILD.bazel	Add a release flag to disambiguate between release and local config_settings.	2 years ago
cc_toolchain_config.bzl	…
toolchains.bazelrc	Add a release flag to disambiguate between release and local config_settings.	2 years ago