loongson/pypi: links for stringcoercion

loongson/mirror stringcoercion-0.0.0.35.tar.gz
loongson/mirror stringcoercion-0.0.0.27.tar.gz
loongson/mirror stringcoercion-0.0.0.26.tar.gz
loongson/mirror stringcoercion-0.0.0.21.tar.gz
loongson/mirror stringcoercion-0.0.0.18.tar.gz
loongson/mirror stringcoercion-0.0.0.17.tar.gz
loongson/mirror stringcoercion-0.0.0.16.tar.gz