Ensure we work on the correct names when coparing the structures.
This might revert changes made in 22641331c1 and would require mode
checks. However, having correct folder structure comparison is more important
than having the not official UTF-8 support.
Github-ref: https://github.com/OfflineIMAP/offlineimap/issues/405
Tested-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>