loongson/pypi: links for webster

loongson/mirror Webster-0.5.2.tar.gz
loongson/mirror Webster-0.5.1.tar.gz
loongson/mirror Webster-0.5.tar.gz
loongson/mirror Webster-0.5.dev7.g622a542.tar.gz
loongson/mirror Webster-0.3.dev7.g622a542.tar.gz