loongson/pypi: links for flightpy

loongson/mirror flightpy-0.0.0.post4.tar.gz
loongson/mirror flightpy-0.0.0.post3.tar.gz
loongson/mirror flightpy-0.0.0.post2.tar.gz
loongson/mirror flightpy-0.0.0.post1.tar.gz