S3FS: fix some unicode-handling problems
S3FS: fix some unicode-handling problems


git-svn-id: 74b2def6592cf29d88d1a5d33b5c4a2732d8507c@524 67cdc799-7952-0410-af00-57a81ceafa0f

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