WL#1034


mysql-test/t/events_logs_tests-master.opt:
  Rename: mysql-test/t/events_slow_query-master.opt -> mysql-test/t/events_logs_tests-master.opt
sql/event_timed.cc:
  ask the anonymous SP to log general statements
sql/sp_head.cc:
  save the OPTION_LOG_OFF and restore it after execution
sql/sp_head.h:
  add a new flag for general log
mysql-test/r/events_logs_tests.result:
  update result file
mysql-test/t/events_logs_tests.test:
  add test for general log