loongson/pypi: links for py-xdrlib

loongson/mirror py_xdrlib-4.0.2.tar.gz
loongson/mirror py_xdrlib-4.0.2-py3-none-any.whl
loongson/mirror py-xdrlib-4.0.1.tar.gz
loongson/mirror py_xdrlib-4.0.1-py3-none-any.whl
loongson/mirror py-xdrlib-4.0.0.tar.gz
loongson/mirror py_xdrlib-4.0.0-py3-none-any.whl