loongson/pypi: links for pythcalculus

loongson/mirror pythcalculus-0.5.tar.gz
loongson/mirror pythcalculus-0.4.tar.gz
loongson/mirror pythcalculus-0.3.tar.gz
loongson/mirror pythcalculus-0.2.tar.gz
loongson/mirror pythcalculus-0.1.tar.gz