BUG#37884: rpl_row_basic_2myisam and rpl_row_basic_3innodb fail sporadically in pushbuild
These have been fixed in 5.1-rpl. Re-applying fix for BUG#37884
in 5.1-bugteam, and disabling rpl_flushlog_loop for BUG#37733 in
5.1-bugteam.


mysql-test/extra/rpl_tests/rpl_row_basic.test:
  Missing sync_slave_with_master added.
mysql-test/suite/rpl/t/disabled.def:
  Disabling rpl_flushlog_loop until the fixed version gets
  merged from 5.1-rpl