loongson/mirror: links for nc5ng

loongson/mirror nc5ng-0.0.4.post1.tar.gz
loongson/mirror nc5ng-0.0.4.tar.gz
loongson/mirror nc5ng-0.0.4a4.tar.gz
loongson/mirror nc5ng-0.0.4a3.tar.gz
loongson/mirror nc5ng-0.0.4a2.tar.gz
loongson/mirror nc5ng-0.0.4a1.tar.gz
loongson/mirror nc5ng-0.0.3.tar.gz
loongson/mirror nc5ng-0.0.2.tar.gz