loongson/pypi: links for flatlibfr

loongson/mirror flatlibfr-0.0.1.dev4.tar.gz
loongson/mirror flatlibfr-0.0.1.dev4-py3.7.egg
loongson/mirror flatlibfr-0.0.1.dev3.tar.gz
loongson/mirror flatlibfr-0.0.1.dev3-py3.7.egg
loongson/mirror flatlibfr-0.0.1.dev1.tar.gz
loongson/mirror flatlibfr-0.0.1.dev1-py3.7.egg