loongson/pypi: links for massspring

loongson/mirror massspring-1.2.0.tar.gz
loongson/mirror massspring-1.0.1.tar.gz
loongson/mirror massspring-1.0.0.tar.gz
loongson/mirror massspring-0.0.7.tar.gz
loongson/mirror massspring-0.0.6.tar.gz
loongson/mirror massspring-0.0.5.tar.gz
loongson/mirror massspring-0.0.4.tar.gz