loongson/pypi: links for txmsgpackrpc

loongson/mirror txmsgpackrpc-1.2.tar.gz
loongson/mirror txmsgpackrpc-1.1.tar.gz
loongson/mirror txmsgpackrpc-1.0.tar.gz
loongson/mirror txmsgpackrpc-0.5.tar.gz
loongson/mirror txmsgpackrpc-0.4.tar.gz