loongson/pypi: links for percache

loongson/mirror percache-0.4.4.tar.gz
loongson/mirror percache-0.4.3.tar.gz
loongson/mirror percache-0.4.1.tar.gz
loongson/mirror percache-0.4.0.tar.gz
loongson/mirror percache-0.3.0.tar.gz
loongson/mirror percache-0.2.1.tar.gz
loongson/mirror percache-0.2.tar.gz
loongson/mirror percache-0.1.1.tar.gz
loongson/mirror percache-0.1.tar.gz