loongson/pypi: links for csx

loongson/mirror csx-1.0.0.tar.gz
loongson/mirror csx-1.0.0b1.tar.gz
loongson/mirror csx-0.11.10.03.tar.gz
loongson/mirror csx-0.11.09.3.tar.gz
loongson/mirror csx-0.11.09.2.tar.gz
loongson/mirror csx-0.11.09.1.tar.gz
loongson/mirror csx-0.11.09.1.linux-x86_64.tar.gz