loongson/pypi: links for pnbody

loongson/mirror pnbody-5.0.10.tar.gz
loongson/mirror pNbody-5.0.9.tar.gz
loongson/mirror pNbody-5.0.8.tar.gz
loongson/mirror pNbody-5.0.6.tar.gz
loongson/mirror pNbody-5.0.3.tar.gz
loongson/mirror pNbody-5.0.tar.gz
loongson/mirror pNbody-4.2.1.tar.gz