loongson/pypi: links for pgabc

loongson/mirror pgabc-1.12.1.tar.gz
loongson/mirror pgabc-1.12.tar.gz
loongson/mirror pgabc-1.11.tar.gz
loongson/mirror pgabc-1.1.tar.gz
loongson/mirror pgabc-1.0.tar.gz