loongson/mirror: links for gencharts

loongson/mirror gencharts-0.5.3.tar.gz
loongson/mirror gencharts-0.5.2.tar.gz
loongson/mirror gencharts-0.5.1.tar.gz
loongson/mirror gencharts-0.5.tar.gz
loongson/mirror gencharts-0.4.tar.gz
loongson/mirror gencharts-0.3.tar.gz
loongson/mirror gencharts-0.2.tar.gz
loongson/mirror gencharts-0.1.tar.gz