This revision is the same as r5745, used for the IGEM "GWF" simulations in 2019.
Compared to the equivalent revision of "REF" (r5744=r6513), the main changes regard constantes_soil_var.f90 and slowproc.f90 to have 4 soiltiles (ntsm, ratio_tile, etc.),
hydrol.f90, routing.f90 for water redistribution, and the xml files to export new output variables.