loongson/pypi: links for meshlabxml

loongson/mirror MeshLabXML-2018.3.tar.gz
loongson/mirror MeshLabXML-2017.9.tar.gz
loongson/mirror MeshLabXML-2017.6.zip
loongson/mirror MeshLabXML-134.20170311.zip
loongson/mirror MeshLabXML-134.20160916.zip
loongson/mirror MeshLabXML-134.20160916b0.zip
loongson/mirror MeshLabXML-134.20160724.zip
loongson/mirror MeshLabXML-134.20160616.zip
loongson/mirror MeshLabXML-134.20160518.zip
loongson/mirror MeshLabXML-134.20160517.zip