i18n: use test_i18ncmp and test_i18ngrep in t5541, t6040, t6120, t7004, t7012 and t7060

Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/t/t6040-tracking-info.sh b/t/t6040-tracking-info.sh
index 6c37191..a9b0ac1 100755
--- a/t/t6040-tracking-info.sh
+++ b/t/t6040-tracking-info.sh
@@ -42,13 +42,13 @@
 b4 ahead 2
 EOF
 
-test_expect_success C_LOCALE_OUTPUT 'branch -v' '
+test_expect_success 'branch -v' '
 	(
 		cd test &&
 		git branch -v
 	) |
 	sed -n -e "$script" >actual &&
-	test_cmp expect actual
+	test_i18ncmp expect actual
 '
 
 test_expect_success 'checkout' '