loongson/pypi: links for products-eventregistration

loongson/mirror Products.EventRegistration-1.0.4.zip
loongson/mirror Products.EventRegistration-1.0.3.zip
loongson/mirror Products.EventRegistration-1.0.2.zip
loongson/mirror Products.EventRegistration-1.0.1.zip
loongson/mirror Products.EventRegistration-1.0.0.zip