loongson/pypi: links for stack-require

loongson/mirror stack-require-0.0.2.1.tar.gz
loongson/mirror stack-require-0.0.2.tar.gz
loongson/mirror stack-require-0.0.1.tar.gz
loongson/mirror stack-require-0.0.1b3.tar.gz
loongson/mirror stack-require-0.0.1b2.tar.gz
loongson/mirror stack-require-0.0.1b1.tar.gz