* Add conformance test for nested listvalue
* Fix upb for parsing repeated Value/ListValue
* Add failed repeated ListValue conformance test into php failure list
* Bump target frameworks from netcoreapp1.0 to netcoreapp2.2.
Move global.json up to root of repo, change SDK ver to 2.2.100
Change .net core sdk in dockerfile for kokoro to ver 2.2.100
* Re-add curl install
* Change all exe target to 2.1
* Fix incorrect versions in global.json and Dockerfile
* Downgrade version to 2.1 to match exe targets
* introduce separate testing Dockerfile for C#
* revert changes to the shared Dockerfile
* use netcoreapp2.1 for C# conformance tests
* use language specific dockerfile for testing C#
* Edit compatibility tests script to use parameters instead of file copies
* install dotnet SDK on windows before running the tests
* update csharp_EXTRA_DIST
* Improve C# serialization performance of repeated fields for primitives.
* Changes based on feedback.
* Change compatibility tests to chec float, bool and double are fixed
* Changes based on feedback.
* In the compute methods use the newly created constants
* Fix#5513
* Added tests for invalid lengths when reading strings and bytes.
Added test for reading tags with invalid wire types in unknown field set.
Changed invalid length check in ReadString to match the one in ReadBytes
* Modify how end tags are encounted in merge code (compiler)
* Modify how end tags are encounted in merge code (generated)
* Modify how end tags are encounted in merge code (library)
* Regenerate generated code through generate_descriptor_proto.sh
* Modify how end tags are encounted in merge code (compiler)
* Modify how end tags are encounted in merge code (generated)
* Modify how end tags are encounted in merge code (library)
* Regenerate generated code through generate_descriptor_proto.sh
Even though the comments were indented to appear to go with the jspb
case/field, protoc doesn't collect comments like that, so these "hanging"
comments actually "attach" to the next thing added to each. Looking at
https://github.com/protocolbuffers/protobuf/pull/5566 you see where
the generated code picked up the comment on the wrong field.
* Down-integrate internal changes to github.
* fix python conformance test
* fix csharp conformance test
* add back java map_lite_test.proto's optimize for option
* fix php conformance test
* Increase C# default recursion limit to 100
This matches the Java and C++ defaults.
* Change compatibility tests to use execution-time default recursion limit
This way the same tests should pass against all versions, even
if the recursion limit changes. (The tests will be testing whether
different messages work, admittedly - but that's probably fine.)