loongson/pypi: links for rjm-recipe-venv

loongson/mirror rjm.recipe.venv-0.8.tar.gz
loongson/mirror rjm.recipe.venv-0.7.tar.gz
loongson/mirror rjm.recipe.venv-0.6.tar.gz
loongson/mirror rjm.recipe.venv-0.5.tar.gz