loongson/mirror: links for pybs-qs

loongson/mirror pyBS_QS-0.21.tar.gz
loongson/mirror pyBS_QS-0.20.tar.gz
loongson/mirror pyBS_QS-0.19.tar.gz
loongson/mirror pyBS_QS-0.18.tar.gz
loongson/mirror pyBS_QS-0.17.tar.gz
loongson/mirror pyBS_QS-0.16.tar.gz
loongson/mirror pyBS_QS-0.15.tar.gz
loongson/mirror pyBS_QS-0.14.tar.gz
loongson/mirror pyBS_QS-0.13.tar.gz
loongson/mirror pyBS_QS-0.12.tar.gz
loongson/mirror pyBS_QS-0.2.tar.gz