loongson/pypi: links for bigchin

loongson/mirror bigchin-1.2.9.tar.gz
loongson/mirror bigchin-1.2.8.tar.gz
loongson/mirror bigchin-1.2.6.tar.gz
loongson/mirror bigchin-1.2.5.tar.gz
loongson/mirror bigchin-1.2.2.tar.gz
loongson/mirror bigchin-1.2.tar.gz
loongson/mirror bigchin-1.1.9.tar.gz
loongson/mirror bigchin-1.1.7.tar.gz
loongson/mirror bigchin-1.1.5.tar.gz
loongson/mirror bigchin-1.1.tar.gz