loongson/pypi: links for dacbench

loongson/mirror dacbench-0.4.0.tar.gz
loongson/mirror dacbench-0.4.0-py3-none-any.whl
loongson/mirror dacbench-0.3.0.tar.gz
loongson/mirror DACBench-0.3.0-py3-none-any.whl
loongson/mirror DACBench-0.2.0.tar.gz