loongson/pypi: links for silver

loongson/mirror silver-0.3.5.tar.gz
loongson/mirror silver-0.3.4.tar.gz
loongson/mirror silver-0.3.3.tar.gz
loongson/mirror silver-0.3.2.tar.gz
loongson/mirror silver-0.3.1.tar.gz
loongson/mirror silver-0.3.tar.gz
loongson/mirror silver-0.2.1.tar.gz
loongson/mirror silver-0.2.tar.gz
loongson/mirror silver-0.1.tar.gz