Remove all autotools usage (#10132)

* Bazelfying conformance tests

Adding infrastructure to "Bazelify" languages other than Java and C++

* Delete benchmarks for languages supported by other repositories

* Bazelfying benchmark tests

* Bazelfying python

Use upb's system python rule instead of branching tensorflow

* Bazelfying Ruby

* Bazelfying C#

* Bazelfying Objective-c

* Bazelfying Kokoro mac builds

* Bazelfying Kokoro linux builds

* Deleting all deprecated files from autotools cleanup

This boils down to Makefile.am and tests.sh and all of their remaining references

* Cleanup after PR reorganizing

- Enable 32 bit tests
- Move conformance tests back
- Use select statements to select alternate runtimes
- Add internal prefixes to proto library macros

* Updating READMEs to use bazel instead of autotools.

* Bazelfying Kokoro release builds

* First round of review fixes

* Second round of review fixes

* Third round of review fixes

* Filtering out conformance tests from Bazel on Windows (b/241484899)

* Add version metadata that was previously scraped from configure.ac

* fixing typo from previous fix

* Adding ruby version tests

* Bumping pinned upb version, and adding tests to python CI
diff --git a/kokoro/docs/publish-python.sh b/kokoro/docs/publish-python.sh
index e3d53c7..9f88017 100755
--- a/kokoro/docs/publish-python.sh
+++ b/kokoro/docs/publish-python.sh
@@ -16,7 +16,7 @@
 sudo apt-get -y install unzip
 wget https://github.com/protocolbuffers/protobuf/releases/download/v21.1/protoc-21.1-linux-x86_64.zip
 unzip protoc-21.1-linux-x86_64.zip bin/protoc
-mv bin/protoc ../src/protoc
+mv bin/protoc ../protoc
 python3 -m venv venv
 source venv/bin/activate
 python setup.py install