loongson/pypi: links for generalized-average

loongson/mirror generalized_average-0.0.0.4.tar.gz
loongson/mirror generalized_average-0.0.0.3.tar.gz
loongson/mirror generalized_average-0.0.0.2.tar.gz
loongson/mirror generalized_average-0.0.0.1.tar.gz