convert ENAMETOOLONG into a PathError
convert ENAMETOOLONG into a PathError

rivenz/pyfilesystem,pmitros/pyfs,flying-circus/pyfilesystem,Konubinix/pyfilesystem,pombreda/pyfilesystem,zopyx/pyfilesystem,piranna/pyfilesystem,pmitros/pyfs,PyFilesystem/pyfilesystem