loongson/pypi: links for gridopt

loongson/mirror GRIDOPT-1.3.7rc1.tar.gz
loongson/mirror GRIDOPT-1.3.6rc1.tar.gz
loongson/mirror GRIDOPT-1.3.5rc2.tar.gz
loongson/mirror GRIDOPT-1.3.5rc1.tar.gz
loongson/mirror GRIDOPT-1.3.4rc2.tar.gz