Demonstrate mishandling of the attribute export-ignore by git archive
when used together with pathspecs. Wildcard pathspecs can even cause it
to abort. And a directory excluded without a wildcard is still included
as an empty folder in the archive.
Test-case-by: David Adam <zanchey@ucc.gu.uwa.edu.au> Signed-off-by: Rene Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>