loongson/pypi: links for obstools

loongson/mirror obstools-0.1.4.tar.gz
loongson/mirror obstools-0.1.3.tar.gz
loongson/mirror obstools-0.1.2.tar.gz
loongson/mirror obstools-0.1.1.tar.gz
loongson/mirror obstools-0.1.0.tar.gz