loongson/pypi: links for gemtools

loongson/mirror Gemtools-1.7.1.tar.gz
loongson/mirror Gemtools-1.7.tar.gz
loongson/mirror Gemtools-1.6.1.tar.gz
loongson/mirror Gemtools-1.6.tar.gz
loongson/mirror Gemtools-1.5.tar.gz
loongson/mirror Gemtools-1.4.tar.gz
loongson/mirror Gemtools-1.3.tar.gz