At the moment non-ascii encodings of filenames are not portably
converted between different filesystems by git. This will most likely
change in the future but to allow repositories to be portable among
different file/operating systems this check is enabled by default.
Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>