567e5c4342
http://www.open-mpi.org/community/lists/devel/2009/08/6618.php lower the default priority of PML/cm to allow _defined_ behaviour for systems, where both MTLs and BTLs are available (Portals and MX). Keep the previous behaviour of favoring in case of PSM. Still, the user may select --mca pml cm for apps where applicable. This commit was SVN r21834.