Minor restructing of process signaling logic with deferal for core

The most significant change is that we don't signal individual processes
unless there are some processes in the step which are currently core
dumping. This change signals the processes closer together in time
when possible.
Remove test for hwloc in test24.1

This appears to have been added by accident
Make sure priority flags is zero in test.

Makes sure that we don't run the multifactor plugin using the
ticket based logic