loongson/pypi: links for s4u-image

loongson/mirror s4u.image-2.4.0.tar.gz
loongson/mirror s4u.image-2.4.0-py2-none-any.whl
loongson/mirror s4u.image-2.3.2.tar.gz
loongson/mirror s4u.image-2.3.1.tar.gz
loongson/mirror s4u.image-2.3.tar.gz
loongson/mirror s4u.image-2.2.0.tar.gz
loongson/mirror s4u.image-2.1.0.tar.gz
loongson/mirror s4u.image-2.0.1.tar.gz