Fixing bug in tensor library.  The zero initialization of Tensor4LSym objects using "=" was only setting 27 entries instead of 36.
Fixing the tensor function derivative.  Some entries were being incorrectly divided by a sqrt(2).
Upgrading the backtracing algorithm for the Newton solver.
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
Restoring LULESH and Makefile defaults.