i18n: git-fetch split up "(non-fast-forward)" message

Split up the "(non-fast-forward)" message from printf directives and
make it translatable.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/fetch.c

@@ -317,9 +317,9 @@ static int update_local_ref(struct ref *ref,
 			r ? _("unable to update local ref") : _("forced update"));
 		return r;
 	} else {
-		sprintf(display, "! %-*s %-*s -> %s  (non-fast-forward)",
-			TRANSPORT_SUMMARY_WIDTH, "[rejected]", REFCOL_WIDTH, remote,
-			pretty_ref);
+		sprintf(display, "! %-*s %-*s -> %s  %s",
+			TRANSPORT_SUMMARY_WIDTH, _("[rejected]"), REFCOL_WIDTH, remote,
+			pretty_ref, _("(non-fast-forward)"));
 		return 1;
 	}
 }