i18n: use test_i18ngrep in t7201
i18n: use test_i18ngrep in t7201

Some test were mistakenly disabled under GETTEXT_POISON as well,
and they have been resurrected.

Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git