loongson/pypi: links for pythmath

loongson/mirror pythmath-0.2.5.tar.gz
loongson/mirror pythmath-0.2.4.tar.gz
loongson/mirror pythmath-0.2.3.tar.gz
loongson/mirror pythmath-0.2.2.tar.gz
loongson/mirror pythmath-0.2.1.tar.gz
loongson/mirror pythmath-0.2.tar.gz
loongson/mirror pythmath-0.1.tar.gz