WL#3204: Add option to compress events in the binary log

Affects: WorkLog-3.4   —   Status: Un-Assigned

Sending large amounts of data from the master to the slave is commonly done by
doing a mysqldump, compressing the data and copying the compressed file to the
slave.  This can easily be supported using the binary log, if we add compression
to speed up the transfer over to the slave.

A suggestion: compression can be  implemented as a feature of LOG engine.