loongson/pypi: links for pipping-easy-install

loongson/mirror pipping-easy-install-0.6.0.tar.gz
loongson/mirror pipping-easy-install-0.5.0.tar.gz
loongson/mirror pipping-easy-install-0.4.0.zip
loongson/mirror pipping-easy-install-0.3.0.tar.gz
loongson/mirror pipping-easy-install-0.2.0.zip