loongson/pypi: links for pybeanstream

loongson/mirror PyBeanstream-0.5.2.tar.gz
loongson/mirror PyBeanstream-0.5.1.tar.gz
loongson/mirror PyBeanstream-0.5.tar.gz
loongson/mirror PyBeanstream-0.3.2.tar.gz
loongson/mirror PyBeanstream-0.3.1.tar.gz