material_model → rheology Relation

File in include/aspect/material_model	Includes file in include/aspect/material_model/rheology
depth_dependent.h	ascii_depth_profile.h
diffusion_dislocation.h	diffusion_dislocation.h
drucker_prager.h	drucker_prager.h
entropy_model.h	ascii_depth_profile.h
entropy_model.h	drucker_prager.h
grain_size.h	drucker_prager.h
simple_compressible.h	constant_viscosity.h
simpler.h	constant_viscosity.h
visco_plastic.h	visco_plastic.h
viscoelastic.h	elasticity.h