MySQL 4.1
  and Bug#16920 rpl_deadlock_innodb fails in show slave status (reported for MySQL 5.1)
  - backport of several fixes done in MySQL 5.0 to 4.1
  - fix for new discovered instability (see comment on Bug#12429 + Bug#16920)
  - reenabling of testcases


mysql-test/r/rpl_deadlock.result:
  Updated results
mysql-test/r/rpl_relayrotate.result:
  Updated results
mysql-test/t/disabled.def:
  Reenabling of tests
mysql-test/t/rpl_deadlock.test:
  - replace sleep with real_sleep (backport fix for Bug#15624 MySQL 5.0)
  - egalized value for Slave_IO_Running 
  - line 105 (backport fix for Bug#12429 MySQL 5.0)
  - line 85 (see comment in Bug#12429 
             + Bug#16920 rpl_deadlock_innodb fails in show slave status)
  - improve readability of show slave status output (--vertical_results)
mysql-test/t/rpl_relayrotate.test:
  - Replace select ... with select max(a)
  - add sync_with_master (backport fix done by Kristian in MySQL 5.0 because of timing
    problems similar to Bug#15624)
mysql-test/t/rpl_until.test:
  Add wait_for_slave_to_stop like in the current MySQL 5.0 version of this test.
  I assume this makes the test results more predictable.