on 5.0            
The server crashes on an assert in net_end_statement indicating that the
Diagnostics area wasn't set properly during execution.
This happened on a multi table DELETE operation using the IGNORE keyword.
The keyword is suppose to allow for execution to continue on a best effort
despite some non-fatal errors. Instead execution stopped and no client
response was sent which would have led to a protocol error if it hadn't been
for the assert.
This patch corrects this issue by checking for the existence of an IGNORE
option before setting an error state during row-by-row delete iteration.


mysql-test/r/innodb_mysql.result:
  * Added test case for bug40127
mysql-test/t/innodb_mysql.test:
  * Added test case for bug40127
sql/sql_delete.cc:
  * IGNORE option wasn't implemented in multi_delete::send_data
    and multi_delete::do_deletes