Fixing tests and results to work when replicating to fewer columns on
slave than on master. One test that previously should fail, now works,
and some log positions have changed as a result of adding metadata to
the events.
Problem: we use 'sleep 2; wait_for_slave_to_stop;' to reach some slave's states
which is buggy, wasteful of time, platform dependant etc.
Fix: use include/wait_for_slave_***.inc's where it's possible instead.
