fast-import: test the new option command
Test three options (quiet and import/export-marks) and verify that the
commandline options override these.
Also make sure that a option command without a preceeding feature
git-options command is rejected and that non-git options are ignored.
Lastly, make sure that git options that we do not recognise are
ignored as well, but that they are rejected when parsed on the
commandline.
Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>