loongson/pypi: links for plonesocial-buildout

loongson/mirror plonesocial.buildout-0.5.4.zip
loongson/mirror plonesocial.buildout-0.5.3.zip
loongson/mirror plonesocial.buildout-0.5.2.zip
loongson/mirror plonesocial.buildout-0.5.1.zip
loongson/mirror plonesocial.buildout-0.5.0.zip
loongson/mirror plonesocial.buildout-0.5.0rc1.zip