loongson/pypi: links for bvatar

loongson/mirror bvatar-1.0.a5.tar.gz
loongson/mirror bvatar-1.0.a4.tar.gz
loongson/mirror bvatar-1.0.a3.tar.gz
loongson/mirror bvatar-1.0.a2.tar.gz
loongson/mirror bvatar-1.0.a1.tar.gz