Final push. Printing some warnings at startup, as --innodb-safe-binlog requires
some other options, to work as expected.
Adding 6 new tests (3 pairs). If they fail on some platforms (so far they have been run only on my Linux),
they should be ignored for the 4.1.3 build (you can just
rm mysql-test/*/rpl_crash_*).
Now going to update doc.