loongson/pypi: links for scrapy-httpproxy

loongson/mirror Scrapy-Httpproxy-0.0.5.tar.gz
loongson/mirror Scrapy_Httpproxy-0.0.5-py2.py3-none-any.whl
loongson/mirror Scrapy-Httpproxy-0.0.4.tar.gz
loongson/mirror Scrapy_Httpproxy-0.0.4-py2.py3-none-any.whl