loongson/pypi: links for pypopt

loongson/mirror pypopt-0.6.0.tar.gz
loongson/mirror pypopt-0.5.0.tar.gz
loongson/mirror pypopt-0.4.3.tar.gz
loongson/mirror pypopt-0.4.2.tar.gz
loongson/mirror pypopt-0.4.1.tar.gz
loongson/mirror pypopt-0.4.0.tar.gz