loongson/pypi: links for products-mailarchive

loongson/mirror Products.MailArchive-2.1.zip
loongson/mirror Products.MailArchive-2.0.zip
loongson/mirror Products.MailArchive-1.5.tar.gz
loongson/mirror Products.MailArchive-1.3.tar.gz
loongson/mirror Products.MailArchive-1.2.tar.gz