The 'git gui' has a number of options that can be specified using the
options dialog. Sometimes it is convenient to be able to specify these
from the command line, therefor document these options.
Signed-off-by: Gustaf Hendeby <hendeby@isy.liu.se> Acked-by: Shawn O. Pearce <speace@spearce.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>