loongson/pypi: links for bce

loongson/mirror bce-4.7.9647.tar.gz
loongson/mirror bce-4.7.9645.tar.gz
loongson/mirror bce-4.7.9643.tar.gz
loongson/mirror bce-4.7.9642.tar.gz
loongson/mirror bce-4.7.9633.tar.gz