"(binlog, position) stored by InnoDB for a replication slave can be wrong".
This code contains conditional #if to distinguish between versions;
it should be merged into 4.1 and 5.0.


sql/ha_innodb.cc:
  correcting the binlog position stored in InnoDB in a slave.
sql/log_event.cc:
  better code to store the binlog position in InnoDB for a slave.
sql/slave.h:
  Better code for storing the binlog position in InnoDB for a slave.