Added gromacs 2016.4 with plumed 2.4.1 (for hrex) buildscript
Added gromacs 2016.4 with plumed 2.4.1 (for hrex) buildscript

UCL-RITS/rcps-buildscripts,UCL-RITS/rcps-buildscripts,UCL-RITS/rcps-buildscripts,UCL-RITS/rcps-buildscripts,UCL-RITS/rcps-buildscripts