loongson/pypi: links for dygit

loongson/mirror DYGIt-6.0.tar.gz
loongson/mirror DYGIt-6.0-py3.6.egg
loongson/mirror DYGIt-5.9-py3.7.egg
loongson/mirror DYGIt-5.8-py3.7.egg
loongson/mirror DYGIt-5.7.tar.gz
loongson/mirror DYGIt-5.6.tar.gz
loongson/mirror DYGIt-5.5.tar.gz
loongson/mirror DYGIt-5.4.tar.gz
loongson/mirror DYGIt-5.3.tar.gz
loongson/mirror DYGIt-5.3-py3.7.egg
loongson/mirror DYGIt-5.2.tar.gz