loongson/pypi: links for certchecker

loongson/mirror certchecker-0.2.4.tar.gz
loongson/mirror certchecker-0.2.3.tar.gz
loongson/mirror certchecker-0.2.2.tar.gz
loongson/mirror certchecker-0.2.1.tar.gz
loongson/mirror certchecker-0.2.0.tar.gz