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.


mysql-test/misc/kill_master.sh:
  If the mysqld process has already gone away, 'kill' will fail, so we need to explicitely
  exit 0, so that the non-zero return code of kill does not make mysqltest stop.
sql/log.cc:
  VC++ does not know (ulonglong)(-1)
sql/mysqld.cc:
  When using --innodb-safe-binlog, some options need to automatically be turned on.