loongson/pypi: links for products-silvaforum

loongson/mirror Products.SilvaForum-3.0.3.tar.gz
loongson/mirror Products.SilvaForum-2.4.2.tar.gz
loongson/mirror Products.SilvaForum-0.3.1.tar.gz
loongson/mirror Products.SilvaForum-0.3.1-py2.4.egg