loongson/mirror: links for bst

loongson/mirror bst-0.5.0.tar.gz
loongson/mirror bst-0.5.0-py2.py3-none-any.whl
loongson/mirror bst-0.1.1.tar.gz
loongson/mirror bst-0.1.1-py2.py3-none-any.whl