loongson/pypi: links for cnndescent

loongson/mirror cnndescent-0.6.tar.gz
loongson/mirror cnndescent-0.5.tar.gz
loongson/mirror cnndescent-0.4.tar.gz
loongson/mirror cnndescent-0.3.tar.gz
loongson/mirror cnndescent-0.2.tar.gz
loongson/mirror cnndescent-0.1.tar.gz