build-system: use string for versions to build
The currently used list doesn't work for some unknown reason. Since versions doesn't have spaces, we can use a string of space separared versions.
Code indexing in gitaly is broken and leads to code not being visible to the user. We work on the issue with highest priority.
The currently used list doesn't work for some unknown reason. Since versions doesn't have spaces, we can use a string of space separared versions.