get_all_tables() skipped tables if the user has no privileges on
the schema itself and no granted privilege on any tables in the schema.
that is, it was skipping performance_schema tables (privileges
on them aren't explicitly granted, but internally hard-coded)
To fix:
* extend ACL_internal_table_access::check() method with
`bool any_combination_will_do`
* fix all perfschema privilege checks to take it into account.
* don't reuse table_acl_check object for all tables, initialize it
for every table otherwise GRANT_INTERNAL_INFO will leak
* remove incorrect privilege check from get_all_tables()
