Implemented test for GERG 2008 residual term and changed include from <tr1/memory> to <memory>

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Implemented dDelta3; test passes

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Added REFPROP names for all fluids - renovated get_fluid_param_string