Post #1887745

@pid_eins FWIW, I have a change for glnx_chase which adds a strategic callback for every path segment that gets resolved, so we can, for example, build the path without adding more complexity to glnx_chase itself. I also hinted at a new cross-platform API in GLib/Gio where we would want to have an opaque handle, which for posix would contain the fd, but it could also contain the path as well. So yeah, I agree that it's the right design, but I think it's something we should do on top of glnx_chase.