LP:833777 - Performance regression with deeply nested subqueries

Monty reported that the following query, taken from the crash-me.sh script takes much longer in 5.3:

select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me where a in (select a from crash_me))))))))))))))))))))))))))))))))