loongson/pypi: links for namespaces

loongson/mirror namespaces-4.2.0.tar.gz
loongson/mirror namespaces-4.1.0.tar.gz
loongson/mirror namespaces-4.0.0.tar.gz
loongson/mirror namespaces-3.1.0.tar.gz
loongson/mirror namespaces-3.0.1.tar.gz
loongson/mirror namespaces-3.0.0.tar.gz
loongson/mirror namespaces-1.0.0.tar.gz