The Q_() wrapper added by 0c9ea33 (i18n: add stub Q_() wrapper for
ngettext, 2011-03-09) needs to be noticed by xgettext.
Add an appropriate --keyword option to the Makefile, so that "make pot"
would notice the strings in the plural form marked with the wrapper.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>