add broacast terminate
Merge branch 'Azurender+++' of https://github.com/analysiser/AzurenderPlus into Azurender+++

Conflicts:
	src/raytracer/MPICommunicate.cpp
	src/raytracer/MPICommunicate.hpp
	src/raytracer/azMPI.cpp
Merge branch 'Azurender+++' of https://github.com/analysiser/AzurenderPlus into Azurender+++