loongson/pypi: links for pycodex

loongson/mirror PyCodeX-0.0.21.tar.gz
loongson/mirror PyCodeX-0.0.20.tar.gz
loongson/mirror PyCodeX-0.0.17.tar.gz
loongson/mirror PyCodeX-0.0.6.tar.gz
loongson/mirror PyCodeX-0.0.5.tar.gz
loongson/mirror PyCodeX-0.0.3.tar.gz
loongson/mirror PyCodeX-0.0.2.tar.gz
loongson/mirror PyCodeX-0.0.1.tar.gz