Recommit with post-review fixes.
mysql-test/r/log_tables.result:
update result
mysql-test/t/log_tables.test:
add a test
sql/log.cc:
Fix NULL handling in log tables
storage/csv/ha_tina.cc:
Explicitly check fo NULLs, when writing a row.
We should not hope, that the null field was
cleaned up.
Though usually we do call Field::reset() or
restore_row(), before calling Field::set_null(),
this depency is neither documented nor enforced
by other means.
mysql-test/t/log_tables-master.opt:
New BitKeeper file ``mysql-test/t/log_tables-master.opt''
