mysql-test/r/events.result:
  Fix spelling.
mysql-test/r/events_bugs.result:
  Fix spelling.
mysql-test/r/ps.result:
  Fix spelling.
mysql-test/t/events.test:
  Fix spelling.
mysql-test/t/events_bugs.test:
  Fix spelling.
mysql-test/t/ps.test:
  Fix spelling.
sql/sql_yacc.yy:
  Fix spelling.
sql/share/errmsg.txt:
  Fix spelling.