Add putenv
Merge branch 'clean' of https://github.com/slitvinov/lammps-configs into clean

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Switch back to sph/rhosum
Add sph-kernel.mac
Update dx[*].mac scripts
Use a simple scheme for particles in the flesh
Add vmd (http://www.ks.uiuc.edu/Research/vmd) postprocessing scripts.
Filter more bonds to make the head more symmetric.
Change parameters, add a second relaxation stage, add more output