loongson/mirror: links for xkcd-dl

loongson/mirror xkcd-dl-0.1.2.tar.gz
loongson/mirror xkcd-dl-0.1.1.tar.gz
loongson/mirror xkcd-dl-0.1.0.tar.gz
loongson/mirror xkcd-dl-0.0.7.tar.gz
loongson/mirror xkcd-dl-0.0.6.tar.gz
loongson/mirror xkcd-dl-0.0.5.tar.gz
loongson/mirror xkcd-dl-0.0.4.tar.gz