WL#1034 (Internal CRON)
(post-post-review updates)



mysql-test/r/events.result:
  update results file
mysql-test/t/events.test:
  add test for Bug #16410  Events: CREATE EVENT is legal in a CREATE TRIGGER statement
sql/sp_head.cc:
  CREATE/ALTER/DROP event mean explicit commit, so they are not allowed in
  a FUNCTION/TRIGGER. Fixes bug#16410
sql/sql_parse.cc:
  - end active transaction for CREATE/ALTER/DROP EVENT because
    they are DDL statements.