* Rollback pull request #9852, which will break clients who don't IWYU and depend on us for these STL headers
* Rolling forward https://github.com/protocolbuffers/protobuf/pull/9852 after confirming it doesn't break google internals
1. For some reason the version script was not working, it was failing to export the main symbol for the Python extension. I fixed this by using the `visibility` attribute instead to export the `PyInit__message` function.
2. We were not properly stripping the `python/dist/` prefix for the C module, which was making the module exported under the name `dist.google._upb` instead of `google._upb`.
3. The `py_library()` rule was failing to actually propagate the module file into the wheel, so I just removed it.
PiperOrigin-RevId: 445446611
* WIP.
* Restore deleted __init__.py files.
* Updated version of upb.
* Moved upb from a submodule to a Bazel dep.
* Updated to new upb which can tolerate missing system_python.
* Updated to a new upb.
* Fix NPE during encoding and add regression test for issue 9507.
(cherry picked from commit 58e320a732)
* Implement `respond_to?` in RubyMessage (#9677)
All synthetic methods implemented by `method_missing` are now supported by `respond_to?`.
Fixes issue #9202.
* Fix null pointer exceptions exposed by new regression tests.
* Fix clear_ on oneofs so that it is safe to call repeatedly and so that respond_to? does not depend on whether the oneof is currently cleared.
* Code cleanup: reenable more tests on JRuby.
* Align JRuby behavior with CRuby by throwing a RuntimeError when attempting to assign to a oneof.
(cherry picked from commit 8e7f936696)
* Update protobuf version
* Merge pull request #9727 from mlocati/build-packaged-php-extension
Fix building packaged PHP extension
(cherry picked from commit 7f9901c5f6)
* Update protobuf version
* Update changelogs for 3.20.1-rc1
Co-authored-by: Jason Lunn <jason.lunn@gmail.com>
Co-authored-by: Jorg Brown <jorg.brown@gmail.com>
* Drop Python versions <3.7.
* Updated README to clarify that Python 3.7 is the minimum.
* Removed more Python 3.5-specific code.
Also changed tests to skip missing interpreters.
* Invoke tox directly instead of through Python.
Hopefully this will pick up python3.
* Updated java_stretch image to bullseye to get Python >= 3.7.
* Use jdk11 instead of jdk8.
* Installed python2 for gtest.
* Use "python3 -m venv" instead of "virtualenv."
* Install python3-venv.