MadGraphControl test updates: SUSY tests
This MR sets up three SUSY-based examples. The first generates and then uses a gridpack. The second is doing full generation on the fly. The third will be generation based on an LHE input file (still to come).
It also changes the logic in the other MGC tests to work based on nEventsPerJob, to avoid hard-coding anything but a multiplier.
(Replacing !270 (closed))
Edited by Frank Siegert