loongson/mirror: links for slushbox

loongson/mirror Slushbox-0.2.1.tar.gz
loongson/mirror Slushbox-0.2.tar.gz
loongson/mirror Slushbox-0.1.2.tar.gz
loongson/mirror Slushbox-0.1.1.tar.gz
loongson/mirror Slushbox-0.1.tar.gz