test_list.c: Internal refactoring.
test_list.c: Internal refactoring.

1. Use EINA_FALSE instead of 0
2. Set the parent widget correctly.
3. Remove unused multi_select_set.
4. Give a meaningful label to the first list item.
5. Call item_selected_set to the second item.
6. Remove unnecessary box.

rvandegrift/elementary,rvandegrift/elementary,tasn/elementary,FlorentRevest/Elementary,FlorentRevest/Elementary,tasn/elementary,rvandegrift/elementary,rvandegrift/elementary,tasn/elementary,tasn/elementary,tasn/elementary,FlorentRevest/Elementary,FlorentRevest/Elementary