loongson/mirror: links for dolmen-thumbnailer

loongson/mirror dolmen.thumbnailer-0.3.tar.gz
loongson/mirror dolmen.thumbnailer-0.2.3.tar.gz
loongson/mirror dolmen.thumbnailer-0.2.2.tar.gz
loongson/mirror dolmen.thumbnailer-0.2.1.tar.gz
loongson/mirror dolmen.thumbnailer-0.2.tar.gz
loongson/mirror dolmen.thumbnailer-0.1.tar.gz