loongson/mirror: links for astack

loongson/mirror astack-0.0.6.tar.gz
loongson/mirror astack-0.0.5.tar.gz
loongson/mirror astack-0.0.4.tar.gz
loongson/mirror astack-0.0.3.tar.gz
loongson/mirror astack-0.0.2.tar.gz
loongson/mirror astack-0.0.1.tar.gz