while slave thread has temp tables - not hard to fix though, but it is time to go to bed
added a new test case for temp table replication and Slave_open_temp_tables
status variable.
Misc fixes
send_file() is more stack-friendly - changed large static buffer to alloc_root()
fixed my_b_seek() to work with WRITE_CACHE
test case to make sure the slave starts correctly after being stopped
truncated words file so the replication tests will take less time
