loongson/pypi: links for pykb

loongson/mirror pykb-2.5.0.tar.gz
loongson/mirror pykb-2.4.0.tar.gz
loongson/mirror pykb-2.3.0.tar.gz
loongson/mirror pykb-2.2.0.tar.gz
loongson/mirror pykb-2.1.0.tar.gz
loongson/mirror pykb-2.0.1.tar.gz
loongson/mirror pykb-2.0.tar.gz
loongson/mirror pykb-1.5.tar.gz
loongson/mirror pykb-1.4.tar.gz