S3FS.getinfo:  don't depend on there being a key for each directory
S3FS.getinfo:  don't depend on there being a key for each directory


git-svn-id: 74b2def6592cf29d88d1a5d33b5c4a2732d8507c@525 67cdc799-7952-0410-af00-57a81ceafa0f

lightkeeper/lspyfilesystem,lightkeeper/lspyfilesystem,atty303/pyfilesystem