loongson/pypi: links for sigutils

loongson/mirror sigutils-0.2.5.tar.gz
loongson/mirror sigutils-0.2.5-py2-none-any.whl
loongson/mirror sigutils-0.2.4.tar.gz
loongson/mirror sigutils-0.2.4-py2-none-any.whl
loongson/mirror sigutils-0.2.3.tar.gz
loongson/mirror sigutils-0.2.3-py2-none-any.whl
loongson/mirror sigutils-0.2.2.tar.gz
loongson/mirror sigutils-0.2.2-py2-none-any.whl