* Remove protoc release for 32-bit Macs 

Apple has been removing the support for 32-bit Mac apps: https://support.apple.com/en-us/HT208436

Our release infrastructure no longer supports building for 32-bit architecture.

* Remove protoc artifact for MacOS 32-bit

* Fixed Ruby JSON serialization of 0/empty wrapper fields.

* Removed newly-passing conformance tests from the failure list.
Co-authored-by: Joshua Haberman <jhaberman@gmail.com>

* Add failing tests for issues with wrapped values where the value is the default

* Add test for wrapped values without a value set

* Bugfix for wrapper types with default values.

The previous optimizations for wrapper types had a bug that prevented
wrappers from registering as "present" if the "value" field was not
present on the wire.

In practice the "value" field will not be serialized when it is zero,
according to proto3 semantics, but due to the optimization this
prevented it from creating a new object to represent the presence of the
field.

The fix is to ensure that if the wrapper message is present on the wire,
we always initialize its value to zero.
Co-authored-by: Joshua Haberman <jhaberman@gmail.com>
Co-authored-by: Dan Quan <dan@quan.io>

Currently all of our MacOS tests are failing with the error: "autom4te: need GNU m4 1.4 or later: /usr/bin/m4". This is likely to be happening because Kokoro has updated their Xcode version to 11.3.

Instead of calling initOnce of dependencies, initialize metadata of dependencies in the same file.

Needs to pass aggregate_metadata option to protoc to trigger, e.g.:
--php_out=aggregate_metadata=foo#bar:generated_dir
For each input file, transitive dependencies (including itself), whose package name has the prefix of foo or bar, will be aggregated, in which their metadata string will be aggregated in the same internalAddGeneratedFile call. For other dependencies, initOnce is called as before.

This feature is EXPERIMENTAL. DO NOT USE!!!

Fix latest ArgumentException for C# extensions
Co-authored-by: Jan Tattermusch <jtattermusch@users.noreply.github.com>

Ref: https://bundler.io/blog/2019/05/14/solutions-for-cant-find-gem-bundler-with-executable-bundle.html

* Call register_class before getClass from desc

* Remove debug code

* Blacklist .proto source files is Bazel allows us to

This is a partial revert of https://github.com/protocolbuffers/protobuf/commit/7b28278c7d4f4175e70aef2f89d304696eb85ae3 to unblock, e.g., https://github.com/grpc/grpc/pull/21590 or https://github.com/lyft/envoy-mobile/issues/617 until Bazel is fixed.

Note: this is a forward-compatible change that automatically switches to the behavior intended by https://github.com/protocolbuffers/protobuf/commit/7b28278c7d4f4175e70aef2f89d304696eb85ae3 when a compatible Bazel is released without requiring users to upgrade Protobuf. We will revert this change when Bazel is fixed.

* Remove trailing ,

* Update BUILD

* add python38

* add python3.8

* fix tox

* Add scripts to test multirequest

* chmod ug+x multirequest.sh

* Add continuous test

* Compile c extension

* Class entry is obsolete in the second request
1) Needes to use class name in persistent map
2) Invalidate class entry stored in descriptor

* Add new files to dist

* Fix compile_extension

* Cleanup outputs for phpize

* Make c extension portable for php 7.4

* Fix conformance tests

* Fix comments

* Fix 32-bit

* Update conformance failure list

* Fix compiler warnings

* Cleanup configure created by phpize
The file created in php 7.4 is not recognizable by previous versions

* Fix conformance tests for 64-bit php

* Fix conformance test

* Fix compile warning

* Fix compile warnings

* Add a proto_lang_toolchain for javalite

* fix toolchain. Swap javalite example to master repo

* Initialize wrapper message during parsing
In case the internal value is default

* Fix zts build

* Add php 7.4 to docker image

* Use https links