databases" and basic handling of errors which happen in triggers.
(The bug itself was fixed by several previous patches).
Fixed bug in multi-delete which were exposed by these tests.


mysql-test/r/trigger.result:
  Added test for bug #5894 "Triggers with altered tables cause corrupt
  databases" and basic handling of errors which happen in triggers.
mysql-test/t/trigger.test:
  Added test for bug #5894 "Triggers with altered tables cause corrupt
  databases" and basic handling of errors which happen in triggers.
sql/sql_delete.cc:
  multi_delete::send_eof():
    Fixed bug which were exposed by testing of basic handling of errors
    in triggers. Error which happened in multi_delete::do_deletes() 
    was wiped out by thd->clear_error() and thus never sent to client
    (and this stalled client connection).