loongson/pypi: links for statement-extractor

loongson/mirror statement-extractor-0.7.tar.gz
loongson/mirror statement-extractor-0.6.tar.gz
loongson/mirror statement-extractor-0.5.tar.gz
loongson/mirror statement-extractor-0.4.tar.gz
loongson/mirror statement-extractor-0.3.tar.gz
loongson/mirror statement-extractor-0.2.tar.gz