loongson/pypi: links for pipext

loongson/mirror pipext-0.2.3.tar.gz
loongson/mirror pipext-0.2.3-py3-none-any.whl
loongson/mirror pipext-0.2.1.tar.gz
loongson/mirror pipext-0.2.1-py3-none-any.whl
loongson/mirror pipext-0.1.1.tar.gz
loongson/mirror pipext-0.1.1-py3-none-any.whl
loongson/mirror pipext-0.1.tar.gz
loongson/mirror pipext-0.1-py3-none-any.whl