loongson/pypi: links for durus

loongson/mirror durus-4.3.tar.gz
loongson/mirror Durus-4.2.tar.gz
loongson/mirror Durus-4.1.tar.gz
loongson/mirror Durus-4.0.tar.gz
loongson/mirror Durus-3.9.tar.gz
loongson/mirror Durus-3.8.tar.gz
loongson/mirror Durus-3.1.tar.gz