I remove the --old-rpl-compat which produces broken binlogs readable
neither by 4.0 nor by 3.23.
This option is a leftover of the early replication of 4.0.0, when
it was still partly compatible with 3.23.
I explained this to the user in the bug report. 


sql/mysqld.cc:
  removing --old-rpl-compat
sql/sql_load.cc:
  removing --old-rpl-compat
sql/sql_repl.h:
  removing --old-rpl-compat