loongson/pypi: links for products-plonepopoll

loongson/mirror Products.PlonePopoll-2.8b3.tar.gz
loongson/mirror Products.PlonePopoll-2.8b2.tar.gz
loongson/mirror Products.PlonePopoll-2.8b1.tar.gz
loongson/mirror Products.PlonePopoll-2.7.3b1.tar.gz
loongson/mirror Products.PlonePopoll-2.7.0_beta2-py2.4.egg
loongson/mirror Products.PlonePopoll-2.7.0-beta2.zip