in CREATE SELECT only if the table is not temporary (because
re-enabling causes a commit). In the future we should disable
again for temporary tables; that will probably require changing
ha_enable_transaction().


sql/sql_insert.cc:
  When we disable transactionality in CREATE SELECT, we re-enable it
  at the end and this causes a commit (inside ha_enable_transaction());
  but this is undesired if the created table is temporary (we don't
  want CREATE TEMPORARY TABLE SELECT to commit all previous statements).
  So we disable logging only if the table is not temporary.
  Ideally in the future we would want to lift this restriction which
  sounds stupid, but for Maria it does not matter now (temporary
  tables are not transactional yet).