loongson/pypi: links for zforms

loongson/mirror zforms-1.8.tar.gz
loongson/mirror zforms-1.7.tar.gz
loongson/mirror zforms-1.6.tar.gz
loongson/mirror zforms-1.5.tar.gz
loongson/mirror zforms-1.4.tar.gz
loongson/mirror zforms-1.3.tar.gz