Use mar files from the signed directory when generating incremental mars
When generating incremental mar files with make incrementals-alpha
or make update_responses-release
, we are generating incremental mar files in the {alpha,release}/unsigned/
directory using mar files from the previous version in that same directory.
If the previous version does not exist in that directory, it is downloaded and the incrementals are generated correctly, using the code-signed osx version. However, if the previous versions was built on this machine, the unsigned directory will contain an unsigned build for the previous version, which will be used to generate the incrementals.
Instead, the {alpha,release}/signed/
directory should be used as the input for the previous version.