fontconfig has changed its default git branch from
master to main, and deleted the master branch. This
breaks GTK ci on MacOs, where we use build cairo and
use its fontconfig subproject.
Update fontconfig wrap to upstream now that it's been merged.
Add gperf wrap which is needed for fontconfig, same as in the
upstream fontconfig repo (this can't be put into wrapdb yet
because it requires changes to source files).
