loongson/pypi: links for railin

loongson/mirror RailIN-0.2.1.tar.gz
loongson/mirror RailIN-0.2.1-py2-none-any.whl
loongson/mirror RailIN-0.2-py2-none-any.whl
loongson/mirror RailIN-0.1-py2-none-any.whl