Add tests to verify that protos are kept in sync. (#78)
Add tests to verify that protos are kept in sync. (#78)

Extend our go_kythe_proto macro to generate a test that will fail if the
checked-in version of the proto we supply for "go get" differs from the version
generated by Bazel.

The test can't actually fix it, but will prompt the user to do so.
kythe/kythe,bzz/kythe,bzz/kythe,bzz/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,bzz/kythe,kythe/kythe,bzz/kythe,kythe/kythe,kythe/kythe,kythe/kythe,kythe/kythe,bzz/kythe,kythe/kythe,bzz/kythe,bzz/kythe,bzz/kythe,bzz/kythe,bzz/kythe,bzz/kythe