loongson/pypi: links for pyvsb

loongson/mirror pyvsb-0.4.4.tar.gz
loongson/mirror pyvsb-0.4.3.tar.gz
loongson/mirror pyvsb-0.4.2.tar.gz
loongson/mirror pyvsb-0.4.1.tar.gz
loongson/mirror pyvsb-0.4.tar.gz
loongson/mirror pyvsb-0.3.1.tar.gz
loongson/mirror pyvsb-0.3.tar.gz