loongson/pypi: links for bch

loongson/mirror bch-1.2.1.tar.gz
loongson/mirror bch-1.2.0.tar.gz
loongson/mirror bch-1.1.0.tar.gz
loongson/mirror bch-1.0.0.tar.gz
loongson/mirror bch-0.2.0.tar.gz
loongson/mirror bch-0.1.1.tar.gz
loongson/mirror bch-0.1.0.tar.gz
loongson/mirror bch-0.0.0.tar.gz