loongson/pypi: links for pyxtaf

loongson/mirror PyXTaf-0.5.1.64.tar.gz
loongson/mirror PyXTaf-0.5.1.64-py2.py3-none-any.whl
loongson/mirror PyXTaf-0.5.1.60.tar.gz
loongson/mirror PyXTaf-0.5.1.60-py2.py3-none-any.whl
loongson/mirror PyXTaf-0.5.1.1-py2.py3-none-any.whl