loongson/pypi: links for ucndata

loongson/mirror ucndata-4.0.4.tar.gz
loongson/mirror ucndata-4.0.3.tar.gz
loongson/mirror ucndata-4.0.2.tar.gz
loongson/mirror ucndata-4.0.1.tar.gz
loongson/mirror ucndata-4.0.0.tar.gz
loongson/mirror ucndata-3.0.1.tar.gz