loongson/pypi: links for proxyprefix

loongson/mirror proxyprefix-0.1.3.tar.gz
loongson/mirror proxyprefix-0.1.2.tar.gz
loongson/mirror proxyprefix-0.1.2-py2-none-any.whl
loongson/mirror proxyprefix-0.1.1.tar.gz
loongson/mirror proxyprefix-0.1.0.tar.gz