Do not have child jobs inherit launch directives unless requested to do so. This affects the map-by, rank-by, bind-to, npernode, pernode, npersocket, persocket, and cpus-per-rank directives. Values provided in the spawn call always take precedence - if a particular value isn't specified, then the ORTE defaults will be used if inheritance is not requested, and the values specified by MCA param will be used if inheritance is set.
Always inherit oversubscribe for now as otherwise MTT will break
Signed-off-by: Ralph Castain <rhc@open-mpi.org>
6b6e63a346