loongson/mirror: links for alto

loongson/mirror alto-0.4.tar.gz
loongson/mirror alto-0.3.1.tar.gz
loongson/mirror alto-0.3.0.tar.gz
loongson/mirror alto-0.2.3.tar.gz
loongson/mirror alto-0.2.2.tar.gz
loongson/mirror alto-0.2.1.tar.gz
loongson/mirror alto-0.2.tar.gz
loongson/mirror alto-0.1.1.tar.gz
loongson/mirror alto-0.1.tar.gz