loongson/pypi: links for libtree

loongson/mirror libtree-6.0.1.tar.gz
loongson/mirror libtree-6.0.0.tar.gz
loongson/mirror libtree-5.2.0.tar.gz
loongson/mirror libtree-5.1.0.tar.gz
loongson/mirror libtree-5.0.1.tar.gz
loongson/mirror libtree-5.0.0.tar.gz
loongson/mirror libtree-4.0.3.tar.gz
loongson/mirror libtree-4.0.2.tar.gz
loongson/mirror libtree-4.0.1.tar.gz
loongson/mirror libtree-4.0.0.tar.gz
loongson/mirror libtree-3.0.0.tar.gz
loongson/mirror libtree-2.1.2.tar.gz
loongson/mirror libtree-2.1.1.tar.gz
loongson/mirror libtree-2.1.0.tar.gz
loongson/mirror libtree-2.0.0.tar.gz
loongson/mirror libtree-1.0.0.tar.gz
loongson/mirror libtree-0.0.3.tar.gz