Should fix errors like:
```
clang: error: the clang compiler does not support '-march=native'
```
Caused by hitting the Apple M1 `arm64` host.
Signed-off-by: Jakub Sokołowski <jakub@status.im>
This is a pretty cure regex-based test, but should work.
For the diff to work this refspec needs to be added to the fetch
```
+refs/heads/master:refs/remotes/@{remote}/master
```
Signed-off-by: Jakub Sokołowski <jakub@status.im>
Adding a single Jenkinsfile for PR builds that can run on all three
platforms supported by our Jenkins CI setup.
Signed-off-by: Jakub Sokołowski <jakub@status.im>
