loongson/pypi: links for pyfgcz

loongson/mirror PyFGCZ-3.0.1.tar.gz
loongson/mirror PyFGCZ-0.5.20.tar.gz
loongson/mirror PyFGCZ-0.5.19.tar.gz
loongson/mirror PyFGCZ-0.5.18.tar.gz
loongson/mirror PyFGCZ-0.5.8.tar.gz