loongson/pypi: links for buildout-environ

loongson/mirror buildout.environ-1.2.0.tar.gz
loongson/mirror buildout.environ-1.1.1.tar.gz
loongson/mirror buildout.environ-1.1.0.tar.gz
loongson/mirror buildout.environ-1.0.2.tar.gz
loongson/mirror buildout.environ-1.0.1.tar.gz
loongson/mirror buildout.environ-1.0.tar.gz