Upgrading the Newton backtracking algorithm.
Resolving conflicts.

Merge branch 'master' of github.com:exmatex/CoEVP

Conflicts:
	CM/src/constitutive_models/Constitutive.h
	CM/src/constitutive_models/ElastoViscoPlasticity.cc
	CM/src/constitutive_models/ElastoViscoPlasticity.h
	CM/src/fine_scale_models/Plasticity.cc
	CM/src/fine_scale_models/Taylor.cc
	CM/src/tensors/tensor.cc
	LULESH/lulesh.cc