Added test to ensure the transum values for material transitions are less than or equal to the number of defined materials

Renamed minp as plastic_stress_min to be more accurate; Modified echoing of input values to follow order given in input file

Replaced ztrans functionality for material transitions below a given depth to a more general transition behavior which allows transitions in at any constant x, y or z value

Added Jean's subroutine for moving surface points along a normal to coincide with the zero of the LSFs

Reverted to using 'include mpif.h' as the use of mpi.mod requires the MPI module be compiled with the same compiler as the DOUAR source, which is not true on geodyncomp

Added input of matrule to determine whether divFEM, majority or minority volume is used for material assignment in elements. Added input of bulkvisc to determine whether a penalty value or bulk viscosity is input. Added input of init_e2d to specify whether or not plastic materials should have their effective viscosity calculated using an initial strain rate.