reapply commit f6aa2942392413015370330d6100d4e22ecfa9da -Add missing header file (cstdlib) for std::exit- from pcanal which got overwritten..
 reapply commit ea402f5f9d6be44f41752c131c40fc039cd4afc4 - Since the TMatrix is used in an inline function, use the real header file - from pcanal which got overwritten..
update stresstest for new/deprecated options for BDTs