loongson/pypi: links for boxlib

loongson/mirror boxlib-0.3.3.tar.gz
loongson/mirror boxlib-0.3.2.tar.gz
loongson/mirror boxlib-0.3.1.tar.gz
loongson/mirror boxlib-0.3.0.tar.gz
loongson/mirror boxlib-0.2.1.tar.gz