Fixing pb failures caused by mtr invokes the test with --tmpdir to which
there are sensitive operations in the test
and setup_fake_relay_log.inc also needed --secure-file-priv for its own separate
directory.
Fixed with removing SELECT INTO OUTFILE and deploying --exec echo instead in the marco.
The test's opt file should contain --secure-file-priv=$MYSQL_TEST_DIR as the test
operations deal with files located in $MYSQL_TEST_DIR.
mysql-test/include/setup_fake_relay_log.inc:
Refining setup_fake_relay_log.inc to not use --secure-file-priv sensitive feature.
The latter should remain available for the test.
Problem: When an Incident_log_event contains a bad incident number on disk,
the server crashes with an assertion.
Fix: Don't validate input with assertions. Use errors.
mysql-test/include/cleanup_fake_relay_log.inc:
Added auxiliary file to restore things that setup_fake_relay_log.inc did.
mysql-test/include/setup_fake_relay_log.inc:
Added auxiliary file to setup replication from an existing relay log.
mysql-test/std_data/bug40482-bin.000001:
Binlog file for rpl.rpl_binlog_corruption
mysql-test/suite/rpl/t/rpl_binlog_corruption.test:
New test file.
sql/log_event.cc:
Check that the incident number is correct at the time the event is constructed.
Do not assert it at the time it is printed.
sql/log_event.h:
Incident_log_event::is_valid() should verify that the incident number is valid.
sql/rpl_constants.h:
Incident numbers should be hard-coded, since they may appear in files.
