loongson/pypi: links for boon-common

loongson/mirror boon-common-1.0.0b4.tar.gz
loongson/mirror boon-common-1.0.0b3.tar.gz
loongson/mirror boon-common-1.0.0b2.tar.gz
loongson/mirror boon-common-1.0.0b1.tar.gz