loongson/pypi: links for mibel-downloader

loongson/mirror MIBEL_Downloader-0.66.zip
loongson/mirror MIBEL_Downloader-0.65.zip
loongson/mirror MIBEL_Downloader-0.61.zip
loongson/mirror MIBEL_Downloader-0.51.zip
loongson/mirror MIBEL_Downloader-0.6.zip
loongson/mirror MIBEL_Downloader-0.5.zip
loongson/mirror MIBEL_Downloader-0.4.zip