loongson/pypi: links for exemgel

loongson/mirror ExEmGel-0.5.tar.gz
loongson/mirror ExEmGel-0.4.tar.gz
loongson/mirror ExEmGel-0.3.tar.gz
loongson/mirror ExEmGel-0.2.tar.gz
loongson/mirror ExEmGel-0.1.tar.gz