loongson/pypi: links for contactlib

loongson/mirror contactlib-2.1.5.tar.gz
loongson/mirror contactlib-2.1.4.tar.gz
loongson/mirror contactlib-2.1.1.tar.gz
loongson/mirror contactlib-2.1.0.tar.gz
loongson/mirror contactlib-2.0.0.tar.gz