tree 0d418a6ec685b226d811e83d25b23b6cf4c45623
parent 3c8e959b6069e379210ee10751892c864cae2372
author Thomas Van Lenten <thomasvl@google.com> 1586799416 -0400
committer Thomas Van Lenten <thomasvl@google.com> 1587760575 -0400

[ObjC] Generation changes around proto3 optional.

- Bump the version marker in the generated code.
- Set the flag to say clear on zero is known.
- Set clear on zero for proto3 optional fields that aren't tagged as optional.
- Also tweak the call from some C generated code to use different apis with
  better validation.
- Mark the ObjC generator as supporting the proto3 optional feature.
- Regenerate the WKTs to get the new flags.