loongson/pypi: links for dss

loongson/mirror dss-0.8.tar.gz
loongson/mirror dss-0.7.tar.gz
loongson/mirror dss-0.5.tar.gz
loongson/mirror dss-0.4.tar.gz
loongson/mirror dss-0.3.tar.gz
loongson/mirror dss-0.2.tar.gz