loongson/pypi: links for trac-multireposearchplugin

loongson/mirror trac-MultiRepoSearchPlugin-0.6.tar.gz
loongson/mirror trac-MultiRepoSearchPlugin-0.5.tar.gz
loongson/mirror trac-MultiRepoSearchPlugin-0.4.tar.gz
loongson/mirror trac-MultiRepoSearchPlugin-0.3.tar.gz
loongson/mirror trac-MultiRepoSearchPlugin-0.2.1.tar.gz
loongson/mirror trac-MultiRepoSearchPlugin-0.2.tar.gz
loongson/mirror trac-MultiRepoSearchPlugin-0.1.tar.gz