loongson/pypi: links for porter-db

loongson/mirror porter-db-0.0.6.tar.gz
loongson/mirror porter-db-0.0.4.tar.gz
loongson/mirror porter-db-0.0.3.tar.gz
loongson/mirror porter-db-0.0.2.tar.gz
loongson/mirror porter-db-0.0.1.tar.gz