* [presubmit] Enforce language attribute in projectt.yaml to be always set.
* Update documentation, better presubmit check, new project template.
* add docstring to templates.py
* Add example values in the project.yaml template and remove python value for now
* Add "project: c++" to 256 projects
* format
* Add labels and selective_unpack sections to the presubmit check
* fix incorrect auto_ccs format in three projects
* fix nss emails after rebase
The OSS-Fuzz builder and runner images have libunwind. Since
the OSS-Fuzz runner images aren't actually used to run fuzzers on
ClusterFuzz and are just actually used for testing(!) this passed
CI before even though it failed immediately on ClusterFuzz.
I've tested that with this fix, the fuzzer works on ClusterFuzz.
Max Moroz