loongson/mirror: links for buildout-versions

loongson/mirror buildout-versions-1.7.tar.gz
loongson/mirror buildout-versions-1.6.tar.gz
loongson/mirror buildout-versions-1.5.tar.gz
loongson/mirror buildout-versions-1.4.tar.gz
loongson/mirror buildout-versions-1.3.tar.gz
loongson/mirror buildout-versions-1.2.tar.gz
loongson/mirror buildout-versions-1.1.tar.gz