Change-Id: I39c4eadbd28164cfd83aa2d1d8b6dfe8286db803

- Update all the new runner cases to handle a skip result as a skip and not a failure.
- Make ObjC use the new serialize_error result if it fails to generate the data.

commit e841bac4 seems to have mis-merged the
change to reporting skipped tests.

I didn't check if there were other merge issues.

Also delete some unused files.

[skip ci]

[skip ci]

Change-Id: Ibb3fe6f919cc7ca0df91da5e1697ba33d259e433

- Mark all conformance tests as now passing.

- Hopefully complete the deps for other languages for the generated conformance proto sources.
- List the generated sources for cleanup by make's clean rules.
- Make the toplevel nuke the pyc files that can get created in the ObjC dir.

Change-Id: Ief77de7134e05e07b1a7e3970d49880c2d5e6fe9

We should now have no conformance failures.

The tests are run from Travis in the same way as on other
platforms. Currently some expected failures - but only expected
in that they're what we got to start with. Will try to fix them in
other pull requests.

Change-Id: If7b1cc0f03f609a7f43ddafc8509b44207c60910

This involved fixing a few important bugs in the
Ruby implementation -- mostly cases of mixing
upb field types and descriptor types (upb field
types do not distinguish between int/sint/fixed/sfixed
like descriptor types do).

Also added protobuf-specific exceptions so parse
errors can be caught specifically.

Change-Id: Ib49d3db976900b2c6f3455c8b88af52cfb86e036

This was enabled by the recent open-sourcing of JSON
support and MessageDifferencer.

MessageDifferencer allows the conformance suite to expand
because it allows us to write tests for payloads that parse
successfully.  To verify the testee's output payload, we
need to parse it back into a message and compare the message
instances.  Comparing output bytes vs. a golden message is
*not* valid, because protobufs do not have a canonical
encoding (especially in the presence of maps, which have
no prescribed serialization order).

We only add one small JSON test for now, but with the
framework in place we now have the foundation to dramatically
expand the coverage of the conformance test suite.

Also added the ability for the testee to skip tests that
exercise features that are unimplemented.  This allows
Java (which currently has no JSON support) to skip tests
involving JSON.

Change-Id: I697b4363da432b61ae3b638b4287c4cda1af4deb

Change-Id: I382dcda97fa123a6da4ff5faad5d7ece95853f33

This allows us to enable conformance tests even when we know
that some tests are failing and need to be fixed.

Change-Id: I372f43663008747db6f2b2cf06e6ffa4c6d85b2d

Change-Id: I85675bfcd7697bb058b9af475445a6bfdd7fd967

Change-Id: I8ef8664f7facf86028be3f4f0d5d2efc8a685d6d

Change-Id: I4c81808e6ace77d2b5737a43417045321b0b10f0

This is necessary for testing on iOS.

Change-Id: I54ec1e3aa2e9fbfff9a6cd6580920a6a62069b63

Change-Id: Ib75664194491643f8e4f1503a2ed942a2d1e1655