fix test_root_dir() testcase to allow empty info dict
fix test_root_dir() testcase to allow empty info dict


git-svn-id: 74b2def6592cf29d88d1a5d33b5c4a2732d8507c@195 67cdc799-7952-0410-af00-57a81ceafa0f

alekibango/pyfilesystem,alekibango/pyfilesystem,anthonybishopric/pyboxfs,duedil-ltd/pyfilesystem,pscottdevos/pyfilesystem,anthonybishopric/pyboxfs,pscottdevos/pyfilesystem,simonluijk/pyFilesystem,revolunet/pyfilesystem