update cauchystat example to conform more with standard LAMMPS examples

Run this example by executing:

% lmp -in lammps.in

% lmp -in in.cauchystat

Note that this example use an EAM potential, and therefore must be

run with a LAMMPS executable built with the MANYBODY package.

dump 1 all cfg 1000 test*.cfg mass type xs ys zs type c_cna

info fixes

timestep 0.002

variable px equal pxx

                     couple none cauchystat 0.001 yes

run 10000

fix 1 all npt temp 600.0 600.0 1.0 &

                     x 0.0 0.0 0.1 &

                     y 0.0 0.0 0.1 &

                     z 0.0 0.0 0.1 &

                     xy -10000.0 -10000.0 0.1 &

                     couple none cauchystat 0.001 no

run 10000