loongson/pypi: links for cobutils

loongson/mirror cobutils-0.2.7.tar.gz
loongson/mirror cobutils-0.2.6.tar.gz
loongson/mirror cobutils-0.2.5.tar.gz
loongson/mirror cobutils-0.2.4.tar.gz
loongson/mirror cobutils-0.2.3.tar.gz
loongson/mirror cobutils-0.2.2.tar.gz
loongson/mirror cobutils-0.2.1.tar.gz
loongson/mirror cobutils-0.2.tar.gz