got LOAD DATA INFILE replication from 3.23 master to 4.0 slave to work
for some reason query_cache now fails - will push anyway and document the
failure if I can repeat it.


client/mysqltest.c:
  added require_version
mysql-test/mysql-test-run.sh:
  added --master-binary=,--slave-binary=,--old-master options
  sleep_until_file_exists -> sleep_until_file_created
sql/slave.cc:
  fixed bug in LOAD DATA INFILE replication from 3.23 master