loongson/pypi: links for xetracker

loongson/mirror xetracker-0.1.4.tar.gz
loongson/mirror xetracker-0.1.3.tar.gz
loongson/mirror xetracker-0.1.2.tar.gz
loongson/mirror xetracker-0.1.1.tar.gz
loongson/mirror xetracker-0.1.tar.gz