Merge dfischer@bk-internal.mysql.com:/home/bk/mysql-5.1-build

  my $opt_comment;

  $opt_master_myport=          9306;

  $opt_slave_myport=           9308;

  $opt_ndbcluster_port=        9310;

  $opt_ndbcluster_port_slave=  9311;

  $im_port=                    9312;

  $im_mysqld1_port=            9313;

  $im_mysqld2_port=            9314;

  # Magic number -69.4 results in traditional test ports starting from 9306.

  set_mtr_build_thread_ports(-69.4);

  # If so requested, we try to avail ourselves of a unique build thread number.

  if ( $ENV{'MTR_BUILD_THREAD'} ) {

  }

  # Up to two masters, up to three slaves

  # A magic value in command_line_setup depends on these equations.

  $opt_master_myport=         $mtr_build_thread * 10 + 10000; # and 1

  $opt_slave_myport=          $opt_master_myport + 2;  # and 3 4

  $opt_ndbcluster_port=       $opt_master_myport + 5;