loongson/pypi: links for backquotes

loongson/mirror backquotes-0.1.0.tar.gz
loongson/mirror backquotes-0.0.4.tar.gz
loongson/mirror backquotes-0.0.3.tar.gz
loongson/mirror backquotes-0.0.3-py2-none-any.whl
loongson/mirror backquotes-0.0.2.tar.gz
loongson/mirror backquotes-0.0.2-py2.py3-none-any.whl
loongson/mirror backquotes-0.0.1.tar.gz
loongson/mirror backquotes-0.0.1-py2.py3-none-any.whl